My boyfriend doesn’t finish.

I’ve been with my boyfriend for 5 months. We’re young (approaching our 20s) and crazy about each other. When we’re alone, we can’t keep our hands off each other. There’s just one problem.

He doesn’t finish. Ever.

Not when he’s doing it solo. Not when we’re together. We’ve talked about it tons of times. He thinks it’s a side effect of the antidepressants he used to take. It’s not taboo to us, since it’s been happening since long before we started dating, but I wanted to know if anyone else had this problem and if they know how to fix it?

Thanks in advance.