<human>: About 7 months ago, my ex-fiance told me she didn't want to get married. We cancelled the wedding. She moved out within a week. We have a 1.5 year that we now share custody of.

She was my first girlfriend, we were together for almost 8 years, we lived together and we have a child together. I was completely taken by surprise when she said she didn't want to get married. Her reason was because she wasn't happy & she didn't want to be miserable for the rest of her life. I respected her decision and agreed we shouldn't get married, even though that was the last thing I wanted to do. At the time of our breakup, I thought to myself that I shouldn't try to convince someone who wasn't happy to stay in a relationship with me, so I didn't. 

It's been seven months and I'm having the same feelings I did the day of our breakup. I love her, she was a great partner, and we have a child together. I get anxiety thinking of her and our son with another man in their lives. Mostly because her judge of character is flawed, she is quick to make friends shitty/bad people (I wedged myself into her life, imo I'm not a irresponsible person). She is too nice & is quick to trust just about anyone. 

I guess what I'm looking for is some advice from someone who dealt & overcame a similar situation. I can't spend the rest of my life feeling like this. I went to counsling but I can no longer afford it, so I'm looking for help here.

Can you give me the gist of the text in a nutshell?
<bot>: called off wedding seven months ago, two weeks before it was supposed to take place. She was my first gf, together 7.5 years, have a 1.5 yr old together. Im having a hard time moving on.