My boyfriend wants sex with other women

My boyfriend and I have been together over a year and a half and we love each other SO much.

We've had a few threesomes together, something he initiated and I was curious to try.

We haven't had sex for almost a year because he got molluscum (he's had it before and do not believe it was sexually transmitted, who knows-that's not important to me)

Hes told me a lot that he wants to be able to have sex with other women whenever he wants, even if I'm not there.

This breaks my heart. I wish with all my heart that I was enough for him.

I talked about this with him last night, through lots of tears.

He can't have sex now, because of the molluscum, but when that's over he'll be wanting to have sex again and probably with people who aren't me.

I'm so broken up about this. What can I do?

He also said that if I ever decided I didn't want threesomes anymore then that would probably be a dealbreaker for the relationship.

I'm so anxious. I miss sex so much but in a way I don't want him to get better because I do t want to share him. That's so horrible 😢

Please help