I dont know what's the meaning of this. in Wannabee's ramblings.

There is a strange thing happening with me. I graduated from college in Sept 2020. I can say it was one of the best times of my life. I had amazing friends. But one friend in particular was the reason why college was so fun for me. He was the first friend I made in college and we used to sit together, had lunch together, went everywhere together. But then i started making more friends, we grew distant and he started sitting with one of my other friends. I think at that point i realised that I missed him a lot and have feelings for him but I didn’t want to mess things up for him. Plus both the people involved were my friends so I was happy for them and always cheered them on. It went on like this and college ended in 2020. We lost touch because of Corona and also because both of us (the guy and me) got a job. (It became very busy).
It’s 2023 now. He texts me on my birthday every year but thats the extent of our conversation. I dont text him myself. 3 years since we’ve been face to face. But I KEEP DREAMING ABOUT HIM FOR SOME REASON! It happened last month twice but this month its already been 3 times in a row.
I don’t why this is happening now all of a sudden. I want to talk to him but it would be very awkward to text him out of the blue. Has anything like this happened to you? What should I do? Why is this happening?