Boyfriend [26], no libido

My boyfriend of 4 years has zero libido. When we first met, we were having sex 3 times a day — he was on antidepressants that weirdly made him super horny. Now it’s been a year with no sex at all. He knows it’s a problem but he’s not doing anything about it.

I’ve been seriously thinking about opening up the relationship, but I know it’ll mess with his head. The thing is, I’m horny and I need a thicc booty to bounce on my D.

What’s your advice?

Thanks!