Love Hurts A Lot

Hi guys i m new to ep..this is my first post....
so here is my story...
i really don't noe i was in search of love or what but this grade i nd one of my friend Alisha had a crush on a handsome guy-Justin..We all attended the same classes..later i came to noe my friends's another friend Amber also liked him..i used to stare him all day whenever we had lectures together...Amber was given a dare by Alisha to ask Justin who wud he chose between three of us?...We waited for some days...We used to chat with him on fb....I was getting despo over him....I broke my friend's trust..My friend had a crush from last 3 years...He had indirectly hurt her a lot...Whenever i felt down and was afraid of not getting Justin i cried....Once i called up my friend and to make me feel better she said its ok ...if i want she will leave Justin ....She is happy with her current crush...And next day i went and said dis to justin..He said yes to me dat day....After breaking my friend's trust in such a way she cried like hell....i m still feeling guilty...i feel like cryin....All my friends ignored me and asked Justin to stay away from me....This was when i started getting depressed....My bf was a depressed kinda guy who always complained about his life ....This slowly put me into more depression..I started hating myself like hell....I m fat..I don't have any good friend....Alisha and Amber were still friends with Justin....Amber was really in true love with Justin....They both still are besties....I used to feel insecure....We had around 3 times fight on this topic but this time it lasted much more time...I got more and more depressed...My bf ignored me and ddnt reply to my calls or texts...I cried day and night and hurted myself a lott by making cuts on my hands.....so that i can hurt myself that much as i hurt him...When i lost all hopes i overdosed on paracetamol to kill myself .....But nothing happened to me.....I also now ignored him...Around 2-3 days later Alisha told me not to hurt myself but she is going to tell me something...She told me Justin loves her....He proposed her recently.........
I WAS TOTALLY SHATTERED...HOW COULD HE DO THIS?????
i trusted him so much....He sweared on me and everyone he will never leave me but........