It's possible this could just be a passing phase, we've all had those moments, where certain elements out of our control make us feel low...and then all,of a sudden things are back as they were without warning or explanation.

You might not even think about it when it does.

However, I would think about planning some time especially with your friend rather than making do with the chance meetings, nothing big just him if you wanna grab a cup of coffee somewhere for half an hour.

Now, at the risk of sounding like a critic, from what you've posted it does look like an emotional loop hole.

There's little I could say to help you with this, I can't "fix" your mind and make you feel the way you want to feel emotionally, unfortunately. :/

The only thing I can honestly suggest is to remember Discords lesson about not always having things your way.

You might not feel like it or really don't want to for whatever reason, but you may have to make comprimises for his sake and the sake of your friendship.

I've been in a few "one-sided" friendships before myself and they never lasted very long.

Think about it, and I hope this helps.

I appreciate the thought. But we can't really see each other since he doesn't have a place of his own.

Have you thought about sharing a place?

Yes, but I just don't want to get in the way of him and his gf tbh.