Will someone help me. I like my bestfriends older brother and...?

Okay so I like my best friends older brother. Me and him really connect when we're together. When ever I go to my best friends house I hang with her and when she is busy I hang with him. And he is so sweet I mean like Zac Efron sweet. And I really like him. And he likes me too. Alot. And we have so much in common like both of us grew up with out a fauther. And a few other things. And we both just recently got our hearts broken. Really bad. He knew this girl for 2 years and they dated the whole time and they were engaged and she cheated on him .Oh he's 15 and Im 13 turning 14 in December . And she crushed him he almost threw himself infront of a train how much pain he was in. And that was 2 months ago. And Just recently this month. I had my heart broken. I dated this guy for 8 months and I was falling in love with him. And he went for a month to tennesse to visit family. And he cheated on me while in tennesse. And the girl who he cheated on me with, and her best friend told me .