Interested in guy I rejected because I wasn’t ready?

A year ago a guy (21) asked me out I rejected him as I was freshly out of a bad experience with someone. We ended up as friends hung out sporadically throughout out the year, he’d always ask if I was seeing anyone. In December we got boba and at the end he took me to his parents house, met his mom, talked to them and then him and I just chilled by the fireplace. Now we’re in July and I feel ready to start something new so I asked him out to dinner and he mentioned he was seeing someone and that it was pretty serious, but he still asked when I was turning 21 so we could go get drinks after work and we were both really open about everything and had a really good convert. I don’t know what to do but it feels like I just lost someone who was so worth it because I couldn’t get my shit together.
Interested in guy I rejected because I wasn’t ready?
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