A guy tells me he loves me n i love him more than anything, but i gotta break him n som1 else up, wat do i do?

ok so me and this guy and been going out 4 almost a year. he went to turkey with our school trip.(i was going to go but i went to pennsylvania to see my family instead) another one of my best friends went. he broke up with me, without warning. they end up going out. now i REALLY love this guy. my really good Friend didn't even ask me if i was over him(she knew how much i loved him) and still went out with him!!!now him n my 2 friends where texing, my 2 friends pretended 2 be me, and he thought it WAS me. they starting talking about some personal things n this guy sed some things and the friend of mine he started with in turkey, found out and read them all(the texts) she broke up with him. now while they where going out me and him met at this pond, me n him made out, now hes going with my other friend, and me and him had a place together OUR place(tahiti) and this is all recent, him and i agreed to meet back at the pond but hes not going to go because hes not going do 2 her wat he did 2 my other ffriend i really need advice 4 this... please answer honestly!