Idk what to do

I have a big problem I am bisexual and been with my boyfriend he is having problems having staying hard after only being together for a year and now my ex girlfriend that we were together and even had a baby together during that time (she got pregnant) and now I have want to contact her and help with the baby girl now that she is back in town and I just want her back and my boyfriend isn't even being romantic or anything towards me anymore need help badly