<human>: Can you give me the gist of the text in a nutshell?

So, my ex broke up with me about four months ago. After an intense and largely very happy three year relationship. Without giving me much of a reason. This was not preceded by any big fights or anything. I was totally blindsided, shocked, hurt, confused, didn't know what to do with my life anymore... etc... for a certain period of time after that. All that said, my self esteem stopped me from pleading with him to get back together (after the initial one or two times). So I didn't. We cut all contact... in real life and in virtual.  Today I am doing much better. I am busy with my life, and I made several new friends. And I can think of him without getting all emotional about it. But, I still think of him a lot. I wish I could stop doing that. When does this go away ?
<bot>: Ex and I split four months ago. No contact since then. I am happy with how far I have come since then. Can't stop thinking about him though. What to do ?