What shall i do?

So Let me give u a brief past. So i was frnds with this guy for 2 yrs and i thought he was my best frnd but later turns out no and this girl i have been dating for 1 month feels like the love of my life but now idk

So a few days back My frnd was removed from a GC i own for personal reasons and turn out he used some blackmail of mine and threatened to send it to everyone ik if i dont add him back (ik it sounds fake but its true) I was damn surprised that he did this and that he did it for such a petty reason so, i no longer talk with him. And today My GF of who i have been with for 1 month (i also have had countless fights with her for no reason, she says she gets mad quickly 🙄🙄🙄), i just had another fight with her and idk what to do anymore can someone pls help me.