cold feet ? feeling so confused

This is long so I do apologise. I had a child at 16 and me and the father worked things out for 3 years but he was seriously abusive to me violent and constantly chatting to other woman on social media saying he was single I don't know if he actually cheated or not but he probably did. 
At the end of the relationship we moved to my home town and I met with old friends and stated going out again which he hated. He tried to lock me in the house and physicly restrain me from going out and when I finally brought up the corouge to leave him he would have a break down and make me feel bad. 
Well one night I went to a party and met two guys who were both really into me and fought over me and I went on a date while I was still with my child's father which was wrong and I know that but I wanted out and he would t accept it.
I went out with one of them when me and the baby's daddy finally split and we went out for  while but the other guy wouldn't leave me alone and adventually I cheated and I left the other guy for him.
We have now been going out for two years and are set to be married in July this guy is amazing he worships the ground I walk in and loves my son so much and treats him as his own child. We have so much in common and are like best friends constantly all over each other and can talk about andything and both really understand each other we are inseparable. 
The thing is I've receamtly been thinking about the baby daddy again in a loving way and it's scaring the life out of me this man was seriously abusive to me violent and mentally but I keep thinking about him. 
Is it cold feet ? Or is it that I still love him ? I didn't feel anything for him when we spilt and suddenly after two years I'm starting to feel again. He is still ovbiously in my child's life so I have to speak to him all the time. I need advise !!