Actually i dont know where to start from. But i happened that my first gf and broke up peacefully about 3 months ago and i feel quite good about it. From time to time i think about the good times we had and get melancholic but its not like i am sad or something.

Now i happened, that a girl i know from when we sometimes meet at a friends, approached me while going out. We chatted and started to text a lot quickly afterwards. I felt great to have someone to talk to again and was happy about how well we get along. The thing that bothers me is that she is turning 17 next month and me 20. Its not like i would be a huge gap but sometimes i feel like she isnt mentally on my age and i would like to rather have her as a friend instead of as a gf. But i kinda sense she feels not that way.

Now two weeks later we still are chatting a lot and i still feel like there is not much room for feelings on my side even though shes quite cute. But yesterday when we went out partying i meet old friends of mine that i havent seen in a long time. (long story short) One of their friends that was there with them started to dance closer, then back to back and then we kissed and made out. 

I actually dont know how and why that happened but i kind of feel guilty. Guilty for actually not intending to have a relationship right now because i dont feel able to have romantic feelings to anyone, guilty for the girl i kissed because she could be thinking i feel something for her, guilty for the girl i am texting with and the old friends of mine that think there is potential for us two
I keep thinking what shall i do, did i fuck up or was that ok, Am i a dick or just to concerned? 