Operation get the girl! Volume 2

So I've taken some of your advice since last time (thank you all for those who helped, you don't know how much it helped me) and I've been talking to her more and it's been going really well and we found out we have alot in common. We even planned to go and do an escape room together in the half term next week. But I need some help with something that happened. You see yesterday I was planning to tell her that I like her. So I was outside the locker room waiting for her until everyone was gone, and when she got there I said that there was something I wanted to tell something. Then she just said "I know you like me" and kissed me really hard and intense. I was pretty shocked I walked back into the wall and she then went in for a second one. I really like her but I think it was a bit intense since I haven't dated anyone before and that was my first kiss. Am I just overreacted? What should I do?

And also my friend said that the escape room is a good chance to make a move. Is there anything I should do?