Guys, which girl would you be more interested in?

Say your a guy who's going to a pool party, and you're the most well known football player in school. You're bringing your soon-to-be girlfriend that you've been close with for almost 2 weeks, but also your ex is going to be there. She's dressed like a skank, in leapord print bikini and everything. You havent seen her in over a year so she probably slipped your mind. With her around, who will you be more interested in, your girlfriend or your ex? Will you be thinking about her at all? You have a tendancy to be a flirt once in a while though.