SanguineSpider: most of this was typed out before I came across the disclosure of your insecurities. I don’t know what I can say to help you there, except to say that I sympathize because I’ve been insecure about one or two things in my life as well. Although it doesn’t necessarily address your exact problems, I will post my original reply regarding “eyes open or eyes closed” anyway, for whatever it may be worth. Obviously there are those here who feel differently about the issue that I. So then:
As Soapbox Monkey pointed out, a lot of eye contact might make a guy even more nervous than he is already, which for some guys is pretty significant, especially with a new lover. If you do make a lot of coital eye contact with your lucky man, please make sure what he sees in your gaze in something good–-passion, love, lust, whatever. But man, if I locked stares with a girl during sex and I thought she looked bored or something . . .
Of course, ten years or so into a relationship, things are quite a bit different. Then, in most cases I imagine, eye contact would be a good thing. And if it wasn’t, it would probably be something that had been worked out nine-and-a-half years ago. Even then, however, it might (as Art and others suggested) be distracting.
Just remember, eye contact in nature (monkeys, dogs, humans) usually has something to do with some sort of challenge or with intimacy. I don’t know if challenging your partner is such a good thing (sometimes maybe). And sex need not be very intimate.
You know, it’s sort of like having a conversation. You want to look your partner in the eye, but you probably don’t want to drill holes through his skull with the power of your stare. You know?
Personally, I don’t usually care one way or the other so long as the open or closed or averted eyes are natural and fit the mood.
Finally, if you’re just plain uncomfortable doing something, then don’t do it. Especially something like eye contact. I don’t see (no pun intended) why this should ultimately be such a big deal. Especially in a world of group sex, peanut butter fetishes, and bloodplay.
Good luck!