A shy guest boy and a really nice girl: Friends or More?

Hi everyone, so there’s this girl that I met in Florida when we went to the house of a friend of my dad’s. Her name is O***. At first I was sitting in the balcony with the adults listening to the chat. I was kinda bored though. So I kindly asked the mother of O if I could join the girls inside who saluted us politely when we first entered. They were nearly my age and watching tv, so I thought why not be friends. I walked inside and saw 2 girls lying on the couches. Perfectly normal. I gotta admit though, I did notice O’s mini (like really tiny) skirt and gave it a few quick unnoticed glances. So we started chatting. I found out that O was 18, 2 years younger than me and her sister M was the same age I was. O was a lot hotter though. Hey, of course I’m gonna compare and note them at first sight, what do you expect a single 16 year old boy to do? Anyways, later in the chat O asked me if I had a girlfriend or not. I said “no,why?” She said “I donna, it’s just coz you’re cute” I felt my cheeks burning and it was probably visible from outside too. I was already nervous near 2 girls... She asked me “Why are you shy, there’s nothing to be afraid of” I was planning to say “How can I not be” and tell her that she was the first one to find me cute ( at least to my knowledge) . I could only manage “ I’m not shy!” in a denying tone. And then, the most impossible thing happened. She said ”Prove it” with a smile on her face. And just as I was trying to process the info hopelessly trying to find out what she meant, she came really close to me like she was about to kiss me and she stopped right in front of my lips. I could feel her breathing right in my face. I’m not sure about this one but I guess her breasts were touching my chest as well. She said”I dare you to kiss me you bravey boy” in a seducing tone. I couldn’t. Don’t know why. I just couldn’t. So she started laughing and said “ Come with me I’ll show you around”, pulled me up. Meanwhile M was there staring at her sister with jealous eyes. So she was giving me a normal tour around the house until one point. That point was when we reached the bathroom. There, she pulled me in with her and locked the door after us. I will never forget nor tell anyone about what happened in there. It only lasted 5 minutes until M came and warned us that our parents were waiting for us for dinner. But still, it was the only time I saw how hot and horny a girl can be at her finest, when she is clothless. For those who are wondering about what happened afterwards, she secretly followed me when I was heading for the garage to get something from the car after dinner and gave me a long and literally burning kiss pushing me towards the car. We didn’t spend the night there, instead returned to our hotel. And since we didn’t exchange numbers or social media accs, we don’t have any contact now, about a week after that day. I’ve found her Instagram acc but I didn’t send a follow request. I guess I am shy after all :)