But it's best to realize that he doesn't feel the same way so you can move on and find someone who does instead of pining away for him even more which will only upset you.
You have long convos that never go anywhere.
If the way he calls you cute makes you uneasy or offends you,.
If you're in a group, and someone is putting you down or saying something mean to you, he'll slyly either change the subject or shut it down.
You spend lots of time with the guy, but doing what? If he is dating someone else, he is off the table.
Sadly, that's probably not going to happen.