Good, but what about Now, let me turn this around. If he had called you up and asked, would there have been any annoyance at all, a “Duh, of course, why waste my time asking?”
Good, but what about you read my last post? I answered that already.
He basically said, “Hey honey, I just volunteered you to spend your fun gaming leisure time doing something that will probably make you pissed off and fail repeatedly at what you were trying to do, plus I spent time talking someone else into joining us, but I didn’t bother giving you a heads-up! Awesome, right?”
My opinion? Just say no. But that’s me.
I’m not “bent out of shape,” by the way. I said I was mildly irritated in the OP. I dunno if it’s just the way I type (I used a lot of words because I was typing during downtime at work, and I type fast). Or maybe this is just a common issue on the internet, that if I cared enough to make a thread about something then clearly I must be super-duper upset about it? I’m mildly irritated, like I said, and made the thread *because *I was leaning toward not even bringing up the issue.
Anyway, to expound: nothing like this has ever come up in our relationship before. I’ve attributed it to a temporary lapse in communication, not malice or control issues (he’s not the controlling type at all). Other than a short period of less than an hour today, I’m not spending a significant amount of my life worrying about this issue. And now I feel like a goon because I even have to explain this. blah!
I’d be mildly annoyed, especially since it seems you were engaging in it because you wanted to spend some time with your boyfriend. Even though the 3rd person won’t be in the same room with the two you (I presume) he will still be there virtually. IOW, your boyfriend invited a 3rd wheel into what was formerly a more intimate scenario. IMO, it’s akin to inviting someone else to join us to a concert. Not a huge deal to get upset about, but a bummer nonetheless.
Don’t give your boyfriend anymore bacon, just to show him. My wife suggests that you cast Divine Intervention on yourself and let them die. We haven’t played WoW in over a year, so perhaps paladins don’t heal with bacon anymore…
Pretty much agree with everybody else that this is a bit annoying, and your boyfriend’s behavior should be adjusted, but in context I don’t think it’s a huge transgression. Having said that, I’d occasionally get home from work and be told, “Login, I told the party you’d DPS when you got home.” It didn’t particularly bother me, but there I was being committed for a single instance, not weeks of PvP. My wife would usually ask if things were being planned though, “Will you be home soon, I’m going to heal 25-man trial, and I can make them wait for you?”
Thanks for the advice! I casually brought it up via text and requested he ask me before committing us to something next time, and all is well. If something like this happens again, then I’ll hammer home that it’s an irritation. As it is, not a huge deal. I brought up my concern about falling on my face, and we’re going to spend more time pvping this week so I won’t feel like such a liability. =)
Just for the record, I only have two immediately-see-red hot buttons installed in my brain, and this is one of them. So I’m getting riled up in empathy just reading your OP. 
And also for the record, unless you’re in the army or something, no one should ever volunteer anybody else for anything without asking them first. This happens to me at work, and it makes me furious. Instead of asking me if I can help another department out when they’re short staffed, they ask my supervisor. At the very least, copy me on the fucking email you send to my supervisor so I can at least pretend I have a say in the matter.
This makes it even more egregious, IMO. The only information he had about what you’d want was that, very likely, you wouldn’t want to. (And frankly it still sounds like you’re just sucking it up for him because it’s a done deal, because you’re anticipating not having that much fun.)
So, in other words, he had every reason to believe you’d say no if given the chance, and he went ahead and volunteered you anyway. Any way you look at that, that’s not good. It’s incredibly disrespectful.
If I had to guess, it was probably a “better to beg forgiveness than ask permission” thing for him. It was a way to force you to go along with what he wanted.
This must be a new relationship. 
Every couple has to negotiate the boundaries around how much and when they can speak for each other. It’s a pretty standard speed bump that most relationships go over at some point.
When I’ve bumped into it, I’ve usually handled it the way you did - casually say ‘I’m okay with doing this, but please ask next time.’ There might have been one or two times when I said ‘no, actually I don’t want to do that’ and backed out. Someone who is very sensitive to this issue would probably need to address it much more directly and much earlier in the relationship.
With the extra info, I’d lean more strongly to the “please ask” side.
You don’t seem like you were all that excited about going 3v3, and it sounds like you commented to him specifically that you weren’t totally game for it with this alt, and then he went ahead and planned this up. That could be him being dense, or obviously a dick, or it could be that he’s trying to work out integrating his friendships with his girlfriend.
Something to find out, I would say. Try to figure out if this was this the Rogue’s idea, or your boyfriend’s? Is the Rogue a friend of the boyfriend and perhaps feeling left out since you’re gaming together as boyfriend and girlfriend? Does the boyfriend feel bad about not playing as often with his friend?
If so, then I would be less mad at the boyfriend - it’s hard to navigate existing friendships when a girlfriend is interested in the same things that the friend group is already interested in. (I’ve joined quite a few existing tabletops as a randomly recurring character because my husband plays decades-long games with his college buddies and they don’t want to leave me out when we go down and visit and they inevitably break out the dice.)
Is this something you do in person or are you all at your own houses or what?
I’d be upset, too. He committed your time without your consent and without knowing whether you had a conflicting commitment or the resources (energy, etc.) to keep the commitment he made FOR you, as if he’s the only decision-maker in the relationship.
Tell him you don’t want to do threes and you can worry about more important things like whether he’s asserting his dominance when he assumes you want the race car when you play Monopoly.
Are you talking about bacon-bacon? Or some wizard shit? 
THE RACECAR? If I can’t be the dog, I’m not playing! /boardflip
Bacon = beacon of light… heh. WoW humor :3
Again thanks for the advices! And yeah this is a new relationship. Certainly too new to be moving in together yet.
Note to self: take Rachel with me to all gatherings that have a chance of Monopoly being dragged out and take the dog so she flips the board and we don’t have to play.
Another vote for: he should have asked, and you need to let him know nicely that he should have asked. As you say, you’re only mildly irritated, and that’s probably an appropriate level of response for the situation.
But don’t decide to say nothing, because it’s not that big a deal, then blow up at him when he does it again. Give him the opportunity to understand where you’re coming from.
Anyone who volunteers my time without consulting me will find that I invariably fail to comply with their expectation. Otherwise, how will they learn not to do it again?
They might not need to be taught a lesson, they might just need to be asked not to do that anymore. If he’s a reasonable guy, he’ll understand.