Hi bella73,
Welcome to the Forum, where hopefully you will get answers, it’s a great place to be able to share your story.
My Son is an addict, so just my experience from that and him telling me, I think the cocaine does heighten their sexual desires and I don’t really think that it matters who with going on some of my Sons past “things” that he has been with, and yes usually they take the cocaine as well.
I’m sure there are other people on here who would be able to enlighten you more.
Keep in touch and take care.
Dx