...just feeling lost...

I've been single for about three months now after my long-term relationship ended. It's weird how lonely I feel even though I'm free to do whatever I want without worrying about another person. Last night, I decided to explore that freedom a bit more actively than usual. After watching some porn and getting turned on, I reached out to an old friend from college who I always had a crush on but never acted on it back then because of my partner's jealousy. We met at this cozy little cafe in the city where we used to study together when we were both still single. Over coffee, he was playful and flirtatious, which really brought out old feelings that I thought had faded away over the years. Eventually, we ended up back at his place... It was intense, raw. Our hands roamed everywhere, lips pressing against every inch of skin we could reach. His cock was thick and ready as soon as I touched it; mine didn't take long to catch up either. ... ... It wasn't just sex, it felt like a release of all those pent-up desires from being with someone who wanted so much less physically than what I needed for years on end. But now that it's over... Am I really okay with this kind of casual thing? Or should I be looking for something more substantial again soon? ... ... Am I the only one who finds themselves feeling like this after breaking up from a long-term relationship? Is this normal? Should I just enjoy the freedom while it lasts or start thinking about moving on to someone new?