Kids that age don't really know how to share lol..but, seriously you are HIS Mommy and I'm betting he's feeling like his position in your heart is being threatened. Believe me, I'm sure that it isn't but, at his age it's easy to be scared of losing the most important person in his life even if as adults we know that would never happen. My suggestion would be for the three of you to sit down and explain to him that he's still your little guy and that he's not losing his Mommy, he's gaining a friend. Then, make an effort to include him in activities (You don't have to include him in all your dates, just make sure you take him to the park or something like that as a couple on a regular basis). I speak from experience... I was the only child of a single father and I scared away more than one potential girlfriend. It seems to me that if it's been almost a year, your guy doesn't scare easily. I hope this helps!
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