I'm not bad-mouthing your situation or anything (like I said, people have emotions...), I just don't understand why people are so quick to hop into bed with someone, especially when they obviously have intimacy issues to deal with before hand. Personally, I don't think anybody should be having sex with another person until they love them and have absolutely no doubt or fear in their heart.
That's a good point. Honestly I think a good deal of the time it's simply because people are horny and then maybe they feel differently about it upon reflection. People generally don't put so much thought into it beforehand, and even if they do, it's no guarantee about how they will feel later.
Also, maybe sadly, people feel a lot of pressure to have sex because it's "normal", or it's what everyone else is doing. People might say "We aren't having sex. Why not? There must be something wrong with our relationship." Or more likely they will think that their partner is thinking that about them.
It's not really a big deal to me. Sex is just something that people do and if emotions are involved, then that's even better. But then I don't have a lot of hang-ups on the subject. It's kind of just something that you have to get used to in relationships that someone else is going to feel differently then you about some things, and might have insecurities and anxieties.
I can't speak for everyone but it doesn't seem that unusual to me for people to compare their current experiences with previous ones, either as a positive or a negative. Especially when it comes to relationships, especially if you feel like you had done something wrong to make a previous relationship not work out, you are going to be thinking about that in how you deal with your current one.
also as a general rule it's not a very good idea to jump right into a new relationship after you just got out of one, but people seem to do that a lot and that can cause some tension.