Was I wrong for going buckwild on Bourbon Street last night?

yes you were wrong. it's not like she's showing her ex that she's all interested in him. she's in a relationship with you. you just showed how jealous you really are. on the other hand, i agree that it's not fair for her to be stringing you both along. she has to choose one or the other. tell her you can't continue on knowing that she has feelings for another guy and that she needs to decide what she wants and either move on from you or from him...but she can't keep you in this game of limbo.