Lucy Burroughs answered
There are a lot of things to consider here. First of all, would you want to risk your friendship for the sake of a relationship that may not work out? Secondly, what do you think the chances are that he likes you back?
If you don't know how your friend feels about you, try flirting subtly with him and see how he reacts.
Don't do anything over-the-top; you don't want him to be sure you're flirting with him, because if he doesn't like you back, he might start avoiding you. Playful teasing, sitting closer to him than usual, and showing an interest in what he says are all good places to start. Smile and make eye contact a lot when you're together.
Hopefully, he'll start flirting back. If he does, I think it's probably safe to tell him you like him, although you might not need to if he gets there first!
It's possible he'll ignore you instead of flirting back: He could be shy, he could just be oblivious, or he could realize you're flirting but not like you in that way. You could try harder in the hope that he just didn't notice the first time, but if he's not interested, he'll probably start acting distant.
I think you can usually tell when somebody likes you. Go with your gut feeling, and if you're too scared to ask him in person, bring it up via text or online. Good luck!
Hopefully, he'll start flirting back. If he does, I think it's probably safe to tell him you like him, although you might not need to if he gets there first!
It's possible he'll ignore you instead of flirting back: He could be shy, he could just be oblivious, or he could realize you're flirting but not like you in that way. You could try harder in the hope that he just didn't notice the first time, but if he's not interested, he'll probably start acting distant.
I think you can usually tell when somebody likes you. Go with your gut feeling, and if you're too scared to ask him in person, bring it up via text or online. Good luck!