This is my first question and I'm very nervous about posting such a personal and potentially embarrassing issue.

My problem is that sometimes when I am having sex with my boyfriend it feels so intense and overwhelming that I burst into tears, I love my boyfriend and he loves me. I'm not crying because it hurts because it doesn't hurt in the slightest (im usually well lubricated) or because I don't want to have sex, because I love having sex with my boyfriend, he always talks to me while were having sex and will always stop if I tell him its uncomfortable, he would hate to hurt me. It always feels so good but then all of a sudden it will start to feel too intense and I feel like I can't cope with that amount of pleasure and end up crying and asking my boyfriend to stop. He always holds me while I cry and then asks me what's wrong and I just can't tell him because I don't know! he wants to help and he thinks that he's hurting me but I just won't admit it and that's just not the case, he now thinks I'm lying to him and has started to think that I'm faking orgasms as well so he's become insecure. I'm 19 and so is my boyfriend, we both live in the UK so we're legal. (just in case anyone asks!)

Anyway, questions...

Has this ever happened to anyone else?

Does anyone know why this is happening?