I'm a curious teen who needs some advice on ual relationships?

Ok, so I'm 15, and I'm just as I ume most guys my age are; Curious and for the most part, horny around girls that appeal to me. I was at a school basketball game the other day and I was sitting by a girl in my cl who, frankly, I consider pretty good looking. We're good friends I guess, and there was something that happened a little earlier in one of our tech cles. We were just shoving and playing around, and she hooked her leg in behind mine and I tripped in her direction. She claimed I grabbed her shoulder, but we both know that I went a little further than her shoulder. I was just joking and pestering her throughout the day, and she was joking back for the most part. This is how we at to the game. We ended up sitting beside each other at the game, and all our other friends were two rows of seat behind us, so I continued pestering her about the moment in tech. We kept talking in our joking ways, and it kinda ended up as me asking her if I could feel her before school let out for Christmas holidays. It didn't seem to bug her, she was still joking with me, kept saying 'no' and giggling every time I brought it back up after a long pause. At the time, I really wanted to, but once I got home, I realized I was treating her bad and I felt kinda sorry. Oh yea, I kinda forgot to mention I have a girlfriend who lives about two hours away, we're pretty close, been going out for about a year, and that's probably why I felt sorry for the most part (Although treating her like a personal toy was pretty bad). Now, I'm nearing the end of the rant, if you've stuck with me, thanks. I was just wondering if it's normal for a guy like me to want ual activaty (even though this is probably pretty minor) in my life at suck a young age. Thanks. (Sorry if it's a little confusing)