#1 there is such thing as sex addiction

#2 don't listen to browning

He will never be satisfied with only you, period. If you want to have a wild threesome and go swinging then go for it and have your fun. If you're not looking to do that then break up with him immediately because he's not going to let up on this. He'll either break you down and make you do something you don't want to do or look elsewhere if you don't want to do it.

But if that's really what you want to do then listen to browning.