Venting Im becoming miserable again

[Pure Vanilla]

After years and years of being sad and angry I finally became apathetic and stopped caring, but then I found someone who brought back hope, who made me happy, and now that theyve betrayed me over a girl they knew for a week despite knowing me for a year and a half im stuck with these horrible feelings, struggling to breath, heart pains, constant anger, i dont know what to do without him but i know going back to him if he breaks up with her will be just as bad, i finally got used to not caring but now my heart opened again just to throw me into deep despair and misery