Ok, a little background- i'm 24, just graduated college, have a decent job, my own apartment, and a gf of 5 years who lives with me. I've noticed that one of our mutual friends from high school, lets call her lauren, might have a thing for me.

My gf and I went to a concert last week with a bunch of our friends, and lauren was also there with some of her friends, so we merged groups and hung out together. Every time my gf would go to the bathroom, or go to get a drink, lauren would start talking to me non stop, would playfully punch me and shit and just seemed to give me attention, and whenever my gf returned she would go back to talking with her friends. She has been texting me a bit since the concert, nothing too overt, just about how my days going and shit.

I guess I have two questions- one, do you think im reading too into it, or does she actually hace a thing for me ? And two, should i act on this or would it just blow up in my face?