<human>: Condense the text into a few key points

First off sorry if the formatting isn't quite right in the title, I'm new here. Anyways so Saturday night me and a couple buddies go out to see a movie. A good friend of mine invites one of his friends down who brings one of her friends, we'll call her Jane. So anyways we're having fun hanging out before the movie and I notice that Jane is very cute. So after the movie we go out to eat and during the course of conversation it comes out that Jane is only 15 but her birthday is tomorrow (Sunday). This strikes me as somewhat odd since everyone else is quite a bit older (18-21). Anyways we finish eating and all go home. Well ever since I have not been able to stop thinking about Jane. I spoke with my best friend who basically reaffirmed my opinion that she is basically a child and besides a relationship just being odd it is inappropriate and quite possibly illegal. Nonetheless i can't stop thinking about her. Prior to Saturday night I had no romantic interest in anybody and have been that way for years so I'm not sure why I latched on to Jane. Sorry about the long post but some input would be greatly appreciated.
<bot>: 21 year old guy has strong feelings for a 16 year old. First time I have been romantically interested in anyone in years even though I know I shouldn't be and don't want to be.