I (F) started dating someone recently (M) and I get on really well with them, we have quite a strong physical attraction and I would say he's nearly always erect from the moment we start kissing or touching eachother etc, but when we have sex it can go on for a really long time and he rarely finishes. Mainly because it gets tiring, and we stop. At first I put it down to the fact we have a drink sometimes when we go out, but then it was also happening sober. I've noticed that he focuses a lot on trying to make me orgasm and doesn't really focus on himself at all. I asked him about it and he said 'I just don't always cum, like women don't always orgasm' which is a fair point. When he does it's usually in the morning and it happens very quickly like within minutes.
I also am not on contraception and I noticed the other day he was worrying about the condom not being ok, and I worry that he's thinking too much about what we are doing and not able to relax. He also got embarassed when he came quickly the few times we did have sex and he finished.
I guess I am becoming insecure worrying he's not attracted to me. I don't know if this is common?