I'm writing this on my phone so please forgive any mistakes. 

My boyfriend and I have been together for 2.5 years and live together. The girl he dated before me was apparently horrible to him, but I don't know many details. He has described her using some pretty colorful language. They worked together and I guess it later turned out that she had slept with most of the other guys they worked with at some point or another, but he says she didnt cheat on him. Nevertheless, this obviously bothered him deeply. 

It has always seemed like a red flag to me that he still harbors such hatred for this girl and uses such offensive words to describe someone he dated for two years, but I let it go.  

I discovered her Facebook a few weeks ago. My curiosity got the better of me and I learned a few things from her profile. He had given me the impression that they had been broken up for at least 6 months before we started dating but it turns out that it was, at most, 3 months. 

After discovering who she was I realized that he recently started following her on instagram and has liked photos she's posted recently. She still posts a message on his facebook on his birthday every year but I don't know of he does the same. I saw these posts but didn't realize she was his ex until now because he had never mentioned her name. I'm not sure what their level of contact is anymore.  Before this I assumed they were completely NC.

This might just be a non-issue, but I was wondering what other people would think of it. I feel like maybe he never really got over whatever happened with their relationship and it seems weird that he would maintain any form of contact while claiming that he basically despises her.
user
Boyfriend says he hates his ex but still maintains some contact wtih her.
assistant
I'm writing this on my phone so please forgive any mistakes. 

My boyfriend and I have been together for 2.5 years and live together. The girl he dated before me was apparently horrible to him, but I don't know many details. He has described her using some pretty colorful language. They worked together and I guess it later turned out that she had slept with most of the other guys they worked with at some point or another, but he says she didnt cheat on him. Nevertheless, this obviously bothered him deeply. 

It has always seemed like a red flag to me that he still harbors such hatred for this girl and uses such offensive words to describe someone he dated for two years, but I let it go.  

I discovered her Facebook a few weeks ago. My curiosity got the better of me and I learned a few things from her profile. He had given me the impression that they had been broken up for at least 6 months before we started dating but it turns out that it was, at most, 3 months. 

After discovering who she was I realized that he recently started following her on instagram and has liked photos she's posted recently. She still posts a message on his facebook on his birthday every year but I don't know of he does the same. I saw these posts but didn't realize she was his ex until now because he had never mentioned her name. I'm not sure what their level of contact is anymore.  Before this I assumed they were completely NC.

This might just be a non-issue, but I was wondering what other people would think of it. I feel like maybe he never really got over whatever happened with their relationship and it seems weird that he would maintain any form of contact while claiming that he basically despises her.
user
Boyfriend apparently still has contact with ex, I'm wondering if this is a
assistant