I'm not sure if I'm still in love or if I just miss having him around.

I used to work in the military, it still turns up in my dreams come to think of it I think I've just past the 10th anniversary of leaving. I look back fondly but I remember the good times, it had become an unbearable hell which I hung onto for way too long before leaving.
I think this analogy may apply here.

Breakups are always tough and I wish I could tell you it gets easier as you get older. However, I can say you will be able to replicate that. You are young with a long life ahead of you 🌞

I've been there and have to remember why we aren't together any longer

Sounds like your still in love. He sounds like he was pretty special. Why did yous seperate?