should i tell him?

Yeah, Ты should! Some chances never come again! For example, if Ты find soemthing he lieks like Ты do, start a mini conversation like with a compliment или a question. или try to get involved with the same things\groups like him. Or,(xD) just talk to him. It´s better though to be around 95 percent sure he likes Ты back before Ты tell him, it could be rlly embarrasing. Well, it depends, sometimes there isn´t rlly a plan how to do it, sometimes Ты just have to make one up as Ты go along. Well, good luck! =)

i had the same problem two months назад but the boy i liked was in my bus and i known him from 3 years.
so, i think that Ты have to confess to him either by talking to him или by giving him a letter like i did :)
but the most important thing is : DON'T LOOSE FAITH!!
because i thought that the guy that i've confessed to him hated me but he actually liked me !!
so, yes tell him :)

talk to him more! if Ты really like him and Ты think he likes Ты give him some clues. Ты can even sometimes tell it to him straight. if he says something funny, tell him he's funny! if Ты just feel like Ты enjoy spending time with him, tell him Ты like when he's around. go for it! yolo!