Should I go back with my baby mother?

So I separated from my baby mother (still my wife) about 10 months ago due to her infidelity, I moved out of state I live in fl she’s in nc and we both have a 3 year old child together. She was dating multiple people throughout this time and just recently told me she broke up with her recent guy and wants to work things out with me, my problem is .. I have a gf now and we live together and well it’s to the point where she is very suspicious of everytime my baby mother is on the phone and it’s driving me crazy. I really care about my gf but the truth is she also did me wrong as well and I forgave her,(she cheated on me with my best friend) and so far she’s been great to me and hasn’t given me red flags but alot of thoughts do run through my head about what she did. I really miss my son since I live so far away from him I’m debating on moving back with his mom but Ofcourse it’s under her roof and well I do believe in giving people a second chance I just don’t know if I’m making the correct choice, I’ve always wanted a family and to raise my child with his mother and father since I wasn’t around my dad that much. I’m just worried that things don’t work out and I have to move back out here again close to my family here, mind you I have done this twice because things didn’t work out but I haven’t gone more than 10 months away. She seems like a different person and like she’s had a lot of sexual encounters and idk if that is a good thing to take her back or if it’s my ego talking. Leaving here means leaving behind my mother and father and current gf to go be with my baby mother and child . Idk what to do any advice?