Hey, the fact that he’s sexually inadequate, unattractive, and doesn’t care about you doesn’t matter—what’s important is the strong bond between you. As long as you have that, nothing else matters.
If you still have difficulty with him in the future, show him this thread.
This is one instance in which I’m glad I’m older (almost 40). The get drunk-have sex-then see if you like each other way of finding a partner doesn’t seem all that emotionally healthy to me, especially for the more sensitive, vulnerable young girls like I was in my early 20’s. I guess most people must be okay with it, though, since it’s so common. You kids nowdays with your sex and your rock and roll music.
Honestly, I’m beginning to tire of the sex leading to relationship as well . . . I also regret the penis and thin comments because, honestly, that’s just me being a bitch, and it was unfair and unmerited. Anyways, back into the wide world of dating I go . . . I’m beginning to think I should limit myself to 30 year olds and above . . .
Gestalt
Are you over 30 yourself?
So you don’t like his small dick or his thin body, and you’re ticked off because he’s not paying more attention to you? “The food’s terrible, and the portions are so small!”. 
Okay, okay, in all fairness, he had quite a few traits I liked as well, however, they’re outnumbered by the bad.
And yes, I realize the ridiculousness of the whole situation. Really, someone showing interest and then pulling away always reels me in . . .
I’m 23 years old, but in general I feel like guys my age tend to be a little . . . immature, for lack of a better word. I know it’s terribly cliched, but I have quite a few friends who have dated older men, and in general they seemed more self-aware and comfortable in their own skin, as well as confident. Anyways, we’ll see.
Gestalt.
Over-30 men who lean toward 23 year olds usually aren’t actually overflowing with self-awareness and confidence, as much as they’re just about good enough at faking it to fool 23 year olds.
Seriously though… thank this guy for jerking you around right at the start, it may have saved you months of dating a beanpole with a tiny dick. And next time, remember that it’s much more fun to date people you actually like.
I’m sure my wife (21) would like to know that about me (30)
Maybe someday she will! 
Dating 30 year olds isn’t going to solve half this problem - that you’re 23. This guy hasn’t been perfect, but neither have you. You date, you live, you learn.