I'm I'm love with my best friend and I don't know what to do

I have liked him since we basically started talking about 2 years ago but recently I have realised I am in love with him. He means everything to me, I can tell him everything, he's always there If I need someone to talk to. My problem is, he is my only close friend( as I fell out with the majority of my "friends" last year) I want to tell him how I feel but I'm scared he doesn't feel the same and it ruins our friendship, which I don't think I could deal with. Another problem is, he is leaving school this year and is going to join the marines. What do I do?

Remember school & college friendship always not a love. You have to take a time to be a enough mature. Understand what is love means exactly.

Just hold yourself. Though he might also be imterested in you too and be afraid to talk too, but you might not be able to deal with distance relationship so far he is goin to join the marine