Husband will only accept FFM but I'm not BI

It's always been my fantasy to have a threesome, but my husband absolutely never wanted to open our relationship like that. After some consideration and reluctance, he finally did some research online and said he'll let me have a threesome, but he doesn't want to see a man on me, so the other person has to be a girl. He said he barely wants to see the girl on my either, but he thinks he'll be okay if the other partner is a girl.

I seriously want to be fucked by two men, be wrecked in both holes, and be lifted and thrown like a without regard, but also treated like a princess. I don't think I would want to go down on a girl or anything like that, but I would be down to kissing and playing with her tits. Ultimately, he's kind of okay with a girl using a strap on, on me. She should really only focus on me and my pleasure and understand that I won't be doing anything for her.

The only way I could see this working is if I found a lesbian lol. I'm straight, so this is really hard, but I really want to get fucked bt two people at the same time.

How should I go about finding someone like this?