Commitment issues?

Alexandra
I have only fallen in love once in my entire life. This was back when i was 16 years old to an older guy who i thought he was the one i was getting married to and have kids with. Though we did have one baby gorl together, it didn't end well. However, my foolish self took him back a second time to try and have the family we dreamed of having together. It didn't take take long for the old problems to come back and haunt our relationship again. So it ended worse. I am sure he has no problem finding someone to be with, as for me, i have only found myself able to have an unsatisfying one night stand and a couple of dates with funny and sweet guys, but when it comes to talking about pursuing a relationship, i bug out. Can this be my heart telling me to give time to the wounds or can it be that i could be having commitment issues? How do i overcome this?