Why does my ex-boyfriend still keep in touch?

He broke up with me 3 years ago. It was amicable. But I was really hurt. But even after that, we "dated" for another 6 months until I told him to stop contacting me. All through out I told him to stop contacting me, probably 3 or more times, but each time he would stop then start again. He never calls, just IM and emails. But if he sees me around town, he always stops and wants to keep talking unless I cut it short.

He always wants to know about everything that's going on in my life. I just tell him everything is fine. He has been dating someone for a year or more (and has told me that they've moved in together) and I feel his contacting me is unethical.

I never ask about his personal life; he offers the information. But I still wonder if he has feelings for me and whether I should ask him about that. I know he cares about me as a person, but I wonder if there's more. During the "after break up" dating, he would hint that he still loves me, but I wanted him to say it, so I wouldn't react. It bothered me. But now I am starting to regret not saying anything.

What would you think about his behavior? What would you do?
Why does my ex-boyfriend still keep in touch?
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