I think my lesbian secret might be out
Over the summer I started to get close to one of my sisters friends. She was always part of a group of 4 girls hanging around with my sis and she would regularly be at our house. Anyway, we get on well even though she's 17 (I'm 25) and we both have boyfriends one day we kissed and things have happened and for the last 2 months we have been having a secret "lesbian" affair.
We meet as often as we can sometimes every day, sometimes even two or three times a day. We make out in the car sometimes and we've even made out in the bathroom whilst her friends (and my sis) were in the house. Once we got a hotel room so we could spend a night together. It's just fun although we are sexually attracted to each other. But here's the problem. Last week one of the girls in her and my sisters friendship group saw us together at the beach. We weren't doing anything but you could tell she was suspicious/curious because she didn't know we knew each other that well and it was just the two of us.
I don't know if she said anything to anyone but we had an excuse ready just in case... Then yesterday the same friend saw us together at the mall. This time we were laughing and kind of holding hands in what we thought was a pretty low key location, but obviously not. She asked what we were doing there and I stupidly said we were waiting for my sister. She wasn't there and you could tell the friend thought something was going on.
What the f*** do I do now?