In a group of friends a guy can only make a move on one female friend in that group. If it goes badly he can't try again or move onto a different friend in that group, its up to the woman to make any future moves after a guys uses his one chance. Women can do what they like as the supersede Gurneys law

Noun: a friend who is usually only called upon by a friend when a more primary/prominent friend is unavailable.

Taken from the term “second string” in an athletic competition situation. In football, if the star quarterback gets injured during a play, the second string is called off the bench to replace him/her. A “Second String Friend” is essentially benched until needed, if ever.

Synonyms: Plan B, Second Choice, Secondary Friend, Benched Until Needed