Is it normal i had sex at the movies with this girl?

Last weekend I was at a movie, and this chick I didn't know was sitting by me and my friends. She was sitting to my left and all my friends were to the right. She had huge tits, and they were perfectly rounded and a bunch of cleavage was visible. They were like those pornstar tits that you just want to stick your dick between and blow your load on. Anyways we started talking and after 30 mins or so we started talking about how she thought I was cute. I told her I thought she was super hot and we exchanged numbers. She was pretty slutty to be honest, and she noticed me staring at her rack. I really couldn't help myself they were the best tits I'd ever seen. She said I could touch them if I wanted and I reached my hand out and grabbed her tit. It was so soft and nice to feel. I asked if we could go somewhere else and she said yes. I followed her out of the movie and into the lobby of the theater. I led her into the bathroom and we went into a stall. She started making out with me and rubbing the outside of my pants feeling my hard dick. She got on her knees and started teasing me with her mouth and tits. She licked my tip, and with her shirt on put my tip into her cleavage. She then took her shirt and bra off and started sucking my dick and I felt like I was going to explode with cum. After like 10 minutes of her sucking, I grabbed her tits up and she knew I wanted to be tittyfucked. She wrapped her tits around my penis, and moved her boobs up and down my shaft. My penis was almost hidden because her boobs were so big and they kept smothering my cock. She wasn't a fat girl either she had an athletic body type with huge boobs. It felt amazing. As soon as I was about to cum I thrusted through her cleavage, exploding lots of cum all over her boobs and cleavage. After that she sucked the tip of my dick to get any more cum out. She drained me and it felt so good. I have hooked up with her three times since the movies. Is this normal?