In these scenarios everyone is disease free and condoms are not needed.
First one is for the ladies. I've just finished licking you to orgasm. I move up to french kiss you. Do you let me?
Another one for the ladies. I've invited you to join Ezmeralda and myself for a MFF threesome [for some reason you agreed.] I've been performing oral sex on Ezmeralda. Do you let me kiss you?
One for the gentlemen. Your lady has just sucked you off. Will you kiss her?
Last one for today. This time it is a MMF threesome. Ezmeralda has just sucked me off. Will you let her kiss you?
My answers for the guy scenarios. Yes to the first one. I apparently don't have a problem with my own cum. No to the second. Don't judge me I just can't bring myself to taste another dude's seed spray.
Leave your answers as a comment.