Originally Posted by
Gigabitch
First of all, if you want to come off as a confident, attractive contender for the position of New Boyfriend, don't try to weasel in there as her "friend". You'll end up with a soggy shoulder and a sad look on your face as she is taken from you by someone else. Even if you get a chance at her, you'll just be her Rebound Clown.
Tell her you're not going to pretend to be sorry to hear her relationship is falling apart and that you're ready to take her out as soon as the dust settles. Then smile charmingly and walk away.