What have I done?! It's all Scotty McCreery's fault for being so damn romantic!

I'm a college student and every semester our school has a concert. Tonight it was Scotty McCreery. I went with some friends tonight. It was pouring rain and there was all this fun, romantic country music, and then the crowd parted and I saw my ex. We only dated for six months but there were an eventful six months. We've been broken up for six months. I saw him and quickly looked away but my friend said he and all his friends were looking over at us. They then decided to go stand somewhere else (to avoid me?) and I felt kind of bummed. I then left with my friend to get out of the rain for a little bit. We ran back into the crowd when Scotty McCreery started singing "The Trouble With Girls." We ended up standing about twenty feet in front of my ex and I just started swaying with the music. We found our other friends after the song ended and stood somewhere else but I kept thinking about my ex. I just got home and had the brilliant idea to send him a friend request on Facebook. I think I'm missing him and I'm so dumb for reaching out to him! Ughhh I know I need to leave the past in the past but that song just made me miss him so much.