NSFW - Lesbian Crush?

Okay, so after 2 weeks of going to class to learn about becoming a tradeswoman, I think I have a crush on a girl in my class. Which is weird, because I am happily married and mostly heterosexual. Meaning that although I am attracted to men, there have been 1 or 2 women that I have seen and said in my head “DAMN she is cute!”
Let me explain: We talked and joked during class several times. Then one morning, I bumped into her at the deli across the street from the school getting breakfast. She immediately responded to my greeting by leaning in and giving me what I can only describe as the most thoughtful hug I have ever received. She is one of the few women there that has actually worked in the construction field prior to enrolling for this training program. She has an awesome physique. We speak often at school, but I can’t get that hug out of my mind and I find myself staring at the back of her head in class. I wan’t to get to know her better and be friends, but I am terrified of doing something stupid and scaring her off. What the hell is wrong with me that a hug could have such a strong impact on me? She really is cute, in an androgynous, L-Word kind of way. I think I would like to kiss her once. Advice? I know this sounds crazy right?