Why are sideline girls never chosen?

[angelofmines]

Why do guys talk to a girl as a sideline while already in a relationship? After he is done with the relationship why do he dump both?

[Derryck]

Not sure I understand the question.

[McAK101]

I don't understand the question.. Is there a way you can rephrase it?

[Living For Love]

Maybe because he might still have some feeling for her. It takes times for them to dissapear after a relationships ends.