It's times like this that make me happy to be a polyamorist. We just don't have to deal with shit like this.
A few weeks ago I got some bites on a two-year-old profile I put up on a dating site. I'm meeting one of those girls this week. I'm really excited about it, and so is lurkette. There's an emotion that poly folks call "frubble" which is sometimes referred to as the opposite of jealousy. It's the feeling of joy you get from seeing someone you love being happy and in love with someone else. It's not always an easy place to get to; you have to pierce your jealousy first. But it's an amazing experience.
(She also thinks that me being with another woman is very hot. So no matter how it goes with that woman, I'll be getting laid.
)
I know this doesn't help you much. Just try to remember that love, being an intangible phenomenon, is not by its nature a finite and quantifiable commodity. The more you love, the more capacity you have for love.