8 XXX : FunWithFriends

I gotta ask, how does a relationship like this start? What pleasure do you get from it? And how do you find guys? Are they friends if yours or strangers? If friends, how does it impact your friendship? Does this happen with just one guy or are there others? Once this happens, do you call them to come back or can they say they want to come over and party? I don't know I could call a friend and ask to come over and fuck his girl. No judgment here, just curious.
She is amazing