<human>: My boyfriend and I dated for almost 2 years and I just broke up with him earlier this month. We were exclusive and said I Love You, but we weren't ever the type to talk about a future together or be overly sappy and romantic. 

Nothing specific happened to make me want to initiate the breakup, but a lot of other changes were happening in my life and he and I weren't really moving forward. I could feel myself slipping out of it, so I ended it. It was very mature and amicable, but I know he felt blindsided, and he said multiple times that while he understood, he was completely crushed.

I've been taking great care to be aware of his feelings since, as we are part of a shared friend group and I do hope to keep things civil between us. We've talked a couple times here and there, and I haven't even thought about meeting or hooking up with anyone new. 

Today, about 3 weeks after the official Break Up, he's posting pictures on social media with a girl...who happens to be wildly pretty (I know that shouldn't matter, but hey). It's clear he's into her and I wouldn't be shocked if they're hooking up. I know I have no jurisdiction to feel sad/angry/jealous, but it is weirdly upsetting for me. I guess I knew this would happen eventually when I initiated the breakup, but I wasn't prepared for it to happen this soon...especially when I thought he was so "heartbroken." Am I crazy? Any advice on how to deal?

Can you give me a shortened version of the text?
<bot>: I initiated the breakup but now I feel weird about how quickly he's moving on. Is this normal and how do I deal?