It's been 3 years and I still think about him 🙄😍😒?

I fell in love with my dream guy (sounds cheesy) and haven't seen him in almost 3 years. Things ended when I moved away very sadly, and I feel like there are a lot of unanswered questions. I now have a boyfriend that I've been dating exclusively for 1 year & 1/2, whom I love very much, but doesn't give me the same feeling as (lets just call him A). I still think about A, but I don't think he thinks about me, atleast not in the same way. When my boyfriend and I went on a break, A invited me to parties and to stay over at his house, I declined both because of my loyalty to my 'boyfriend'. I always get really excited when he texts, but it was a confusing relationship and we never got the timing right. I always fantasize about him and think about what we could have been if I hadn't moved away. Help me how to get over this ? 😩😩😩

I also want to add that my current boyfriend has ALWAYS treated me right and we respect eachother. He hasn't been trying lately so maybe that's why my mind drifts..? I'd hate to not have him.