Go talk to him. Sit with him at lunch. Since you know he likes you you really don’t have a problem.
tell her your feelings
Depends on if he likes you and how he treats you. And also if he gives you attention and impesses you.
It depends on how old you are if your in highschool he/she doesn't like you if you in middle school there just nervous around you
Nope.
It IS there!
Don't really tell her to do anything, just let her crush on. They will eventually begin to have boyfriends and girlfriends in middle school, and whether that's going to happen is based on you catching up with her and her crush. When she goes to middle school, she might not want to tell you. So get a close relationship with her.
ask them
He will make an effort to speak to you if he likes you.
Yeah I have a crush that has lasted 3 years.
you ask your crush's best friend to ask your crush who your crush likes(it may not work but just try)
Just do things he likes and talk to him often
If your crush likes to sleep on your belly, then he or she finds that affectionate.