What I always do is flirt with him not to much and if you see hes kinda flirting back you can tell him that you like him and he might feel the same way <3
How would you tell your crush that you like them?
I think it starts with friendship and then when you feel like he's always helping you, always looking at you, always treating you nice and you have feelings for him - I would confess to him. But when he says he likes you too, you have a relationship with him and that is how it goes.