<human>: Give me the gist of the text in a nutshell

My best friend is dating a girl that I've known for the past couple years, but I never asked her out or anything. The girl and I share a class together, and as we've talked more and more, we've found out how similar we are. 

It started as casual conversation to pass time in class, but now it's evolved into walking home together, sharing interests and (jokingly?) making plans together. I definitely feel some sort of connection between us and we have tons of things in common.

I am well aware that going much farther than a "just friends" relationship with her could ruin my friendship with her boyfriend. Even if/when they break up. I don't want to emotionally hurt anyone in this situation, but I also don't want to go on wondering what would have happened if I told her how I feel.

So I suppose the question is this: what are my options? Do I confess my feelings? Or take her out as a friend and see what happens? Do I tell the boyfriend? Or will I just have to accept the fact that I missed my chance?

I know this is probably just stupid high school drama, and that this may not matter in a few years, but I want to know what I can or should do.
<bot>: I wish that I had Jessie's girl, and I think she may like me too. Also Jessie is a close friend.