a couple of moves i would have tryed;
-how do you all know each other? (make sure that the guy isnt with her)
if clams to be, ask the target how long they have been seeing each other, just in case he is lying. if so "blow him out of the water!
if the guy was showing disinterest, it was for a purpose... he could have been after or trying to portray alpha characteristics.
at that point i would have over alphad him, using body language and not chasing him for attention.
for example, last night at the club, this one guy came onto my set and talked to this one girl... i went up to them ans sayed, omg you make such a cute couple. get her trying to avoid the comparisons and shut him down. then i asked how they new each other and referred to him as "sport". total dlv.
after the guy is dealt with
-i would talk to the set and give my interest to the obstacles and dhv myself to them and "shoot shit"
-throwing some negs to the target "i think your hair would look better up/down".
-after make it seam that your giving her a second chance and she has to dhv herself to you.
tell the group you have to talk to her but say it in a none alertive manor "i been kinda isolation your friend here, mind if i show her something/talk to her? we will be right over here, you can join us after if you like, we will save you a seat.
relax after then let her dhv herself some more and build rapport.
depending on how its going, close with, you seem pretty cool, *present your phone* and tell her to add her number.
ooor do the kiss close
all the best
Ecko