<human>: Can you condense the text into a few key points?

We know a lot of the same people, and his reputation is for being a nice, cool guy. He's not a jerk.  

Anyways, he pursued me. We slept together a few times. Then, the last time we had sex, the very next day, he started to act weird. We'd be with our friends and I'd try to interact with him just as I'd been doing before, but he'd totally ignore me. No eye contact. Walking away.

After a few days of that weirdness. I finally asked him what's up. And he said that he needs to be alone and stuff because of life and an intense relationship that ended a few months ago. Then he hugged me tight and kissed my cheek. I, of course, was totally understanding and cool about it. 

But now I'm kind of upset. Like I was disrespected. I hate that I had to ask him what's up. I hate that he ignored me, like I did something wrong. I didn't act differently around him. I'm not clingy. I didn't text him. I didn't pursue him. I didn't expect anything but a fun time. 

So, now I want to avoid him for a while. I don't want to infringe on his "alone" time. I don't want to be reminded of how he ignored me, when I did nothing wrong. 

Am I overreacting?
<bot>: I sleep with guy. He starts to ignore me. I ask him what's up. He says he needs to be alone. I feel disrespected. Now I want to ignore him. Immature of me?