So the other day after playing pick up basketball at the gym, one of my basketball associates who just so happens to be a fruity-tooty babe, asked for a ride home, which is like 25 miles from my apartment so, I wasn't up to anything good so why not? we decided to go eat out and eventually, took it back to her place and... I don't know why but it just felt right at the moment, now I feel terrible. I have her number now, and this morning my current GF texted me to come pick her up, so I spent the day with her, now its 2pm, shes napping beside me, and I am about to shit freak I feel so cluster fucked...what to do...I recieved 2 texts from the chick, I'm not opening them...Help me? Advice please?
Edit - Some backround I should probably leave: I've been dating this girl for 3 months, so I wouldn't say that its the end of the world, but the guilt is eatting me alive, and I have no where near the balls to confront her about it, so telling her the true story... is sorry but not an option for me. I know the other girl decently, I've known her for about the same time as my gf, the only other encounter besides basketball would be at work a few times where I've chatted up.