I don't enjoy sex with my boyfriend anymore... Before, we could be having sex like an hour before he cums ,but now he cums like in 2 minutes.. I don't know what happened.. sometimes I feel like maybe is my fault.. I needed someone to talk to, and the only person at that time/place, was my ex... we ended up having sex/ it felt like old times/amazing... I then realized that am not the issue why my boyfriend cums fast.. I want to know... 1) what causes some guys to fast? For my situation, what can I do to have that sexual anxiety with my baby again? I really want out sex life back.. I've never talked to him about it.. I feel like if I don't satisfy him as I used to, m=he is going to leave me... I NEED HELP..

TALK with him! There are countless reasons this happens, and unless two people TALK, strangers online are just shooting in the dark. Come back after you have done so, if you need advice.

You cheated on your boyfriend with your ex? Make sure he knows this when you talk to him. Probably be the end of the relationship, but infidelity does that.

Something could have changed with him, mentally or physically. Maybe he got lazy or maybe something is different it is hard to say without talking to him.

A word of advice. F**king your ex to make sure it isn't you is NOT the ideal way to troubleshoot sexual problems.

Yeah I agree with Craven. Cheating is wrong and I don't get it. But the only thing I wanted to add is that there is more to sex than just your physical gratification.