If you are in a Long-Distance-Relationship, you really believe that someone should sit at home and do nothing because you live apart from them? That's not even realistic. If you feel he is "dating", then break up with him. Find someone that actually lives in the same town so this is not an issue. It's extremely difficult to maintain an LDR simply because you have to really trust them and they need to really trust you.
I get so upset when my boyfriend goes out... We're LDR, help?
Edit : I think you guys are misunderstanding... I don't bother him when he's out, and I don't ask him to not go. I don't even communicate to him that I "dislike" when he leaves because I KNOW that he needs a social life. Upset isn't being used in place of "angry". I'm in a new place without any friends and I don't know what to do with myself while he's away. Don't assume to tell me I don't belong in my relationship. I'm just asking for advice to avoid getting sad when he leaves. Thank you.
Well the problem is not him ... HE is not a pawn that you can control every move .. He is a living breathing human being and has a life beyond a computer screen .. And yes that "life" involves many aspects of normality .. Like a social life, a family life, a professional or school life .. Etc.
You either trust him, and appreciate the fact that he CAN have a monogamous relationship .. Or you don't ... The choice is yours.
Make a life for yourself. Whatever your interests are you can find volunteer work in that area, join a gym, a book club anything but sit home. Let him know you're out there enjoying yourself, your relationship will improve when he see that you're not just hanging around waiting to see what he does next.
Turn the tables....let HIM be the one who's upset because you're going out so much.