When a guy and a girl whom are dating are together, one of the spouses tries to get the friend of the other spouse to help cheat on their best friend but the best friend is such a good friend that no matter how much they want to bums uglies they don't want to lose their friend.
guy - "she is so mean to me, you're so nice, I want to be with you (tries to kiss)''
friend - (pulls away from kiss) "sorry she's my best friend and I love her so back off"
girl (later in the years after they have broke up) - "he was always trying to get with my friends"
friend - "yeah he tried to get fruuty with me once but I told him that I loved you too much and to get lost."