Bear with me. But I brought a girl home and things went well until sex. She started sucking my dick and I came after like 2 minutes. It got hard again not long after. Put the condom on and she got on top of me...and nothing it just went down and refused to stay up. I was making light of it but tbh I feel terrible.
It was hard to not feel inadequate. It bothered me so much I'm asking how I prevent this? I'm a healthy 22 year old.

I've had girlfriends before. But this never happened. But it's been awhile tbh. This girl is on the fatter side. Idk if that has anything to do with it. Or if it's an attraction thing. Has anyone had this issue? What can I do? I kinda would like to try again. But idk