Erection*

Anybody ever experience this? Got out of a year and a half long relationship about a month ago. Have slept with 3 girls since then. Lately though, like the last week, I haven't had a single erection. No morning wood, nothing. I had a girl over the other night that I already had sex with a few days after the break up, and she was hot and heavy on me all night. Got to the bedroom, fucking dick decides it's not going to show up. The fuck is wrong with me? Am I broken or something? I'm 23 btw.

Edit: haven't watched porn in like 4 or 5 months, fapped for the first time in like 2 months a few days ago when i somehow managed to get an erection in the shower.