find myself...again

i was in love with someone and they totally broke my heart…more like ripped it out but lets not go there. I’m still in love with them and they regret doing it, but they are with someone else… and they dont love them. i been hurt so many times them but i cant stop loving them, when i see them both together it hurts so much and they dont understand that. what makes it worse is that they are both my friends. so i hide how i feel..getting more sad everyday. i’m weaker than i was, i dont feel as though i have a heart anymore and i cant enjoy myself, i feel the only way i can find myself again is in them, they still wanna be with me, its just so hard seeing them together. i dunno how much longer i can hold on to that small piece i have of them. i feel as though i’m walking on very thin ice and if i do even the smallest thing wrong it’ll be all over again and i cant let that happen. Can anyone help?