So i think im in love with my best friend. We kinda had a thing this summer, but he had a girlfriend, then school started back. & he would text me all day since we wouldnt get to see each other (he graduated last year) & then in September he left for basic training to be a marine. Im so proud if him for that. But while he was gone his girlfriend cheated on him, i dont know if i should tell him. I dont want him to find out about it then find out that i knew the whole time, but i dont want him to think im jealous either. ? i just love him with every fiber of my being. & i know he deserves someone better than her. Someone who is gonna stick by his side. What do i do?