<human>: Can you provide a brief rundown of the text in within 3 sentences?

Recently I haven't been able to stop thinking about my ex gf from a year ago. I ended the relationship, but it seems as time has gone by my reasons seem less clear and sometimes I feel some regret/that I made the wrong decision. I know at the time I really wanted to end it (and did for a while). However, as the reasons are starting to 'fade' from memory it has become harder. I am also dating a new girl for a few months now as well. 

The new girl is great, but for some reason I just feel so much more emotionally attached to my ex. Any advice on how to deal with this/put this finally in my rear-view mirror?
<bot>: Dating new girl who I really like but cannot stop thinking of my ex gf who I broke up with 1 year ago. Any advice on how to stop thinking of her?