My crush lol

I rlly don’t wanna say this online but it’s not like anyone would see this anyways so…….

  I have a big fat juicy crush on this girl in my math class for weeks now and I think she likes me to 

  She sits behind me and always asks me for favours even tho she sits next to her friends,and one time we were in a three day camp and during every time I see her she is starting at me and quickly looks away.

  I think about her every night and after school,I’ve even had dreams about her. My friend said that she was also lesbian so I rlly want to ask her out 

   Idk what to do pls give me adv