It doesn't start with sex, it starts with a kiss or a touch. You can also just make it literal and tell the person you're attracted to them. That's what usually worked for me, communication is key.

Prostitutes exist precisely for people that don't want to do or have trouble with these things you know.

You give them money, you get ussy. It's a simple system and they're happy to explain how it works to get a repeat customer.

Yep, that'll do it. If you want to have sex with someone, someone has to make a move. That someone would probably need to be you.

I sometimes say "wanna fuck about it?" And it normally works okay.