Why is he happy if I see someone else if he likes me?

Long story short, I met this guy through work but because of our circumstances we couldn’t be together. Both left our jobs about a month ago and moved on with our own lives but I always found his communication was shit. I didn’t want to get upset without confronting him first but during that I said maybe it’s best if we stop talking and he kept saying he still wants to message and that he won’t forget about me and how he can’t speak to me like how he speaks to other people but then he kept saying how he understands why I feel the way I do and that his intentions were never to hurt me. And then I told him how I have a date and he seemed really happy like he kept saying ‘Sounds really cute!’ ‘Hope it goes well for you! Xx” etc.

Surely that’s a sign he doesn’t like me? Because why would he be happy to stop talking and be happy for me to see someone else if he liked me? Or am I being stupid?

Why is he happy if I see someone else if he likes me?
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