He likes me but I don’t like him, what do I do?Watch
It's kinder to end it now so you can both move on with your lives without anyone expecting something that can never happen. It might hurt at first but you'll both get over it in time and find a new friend/lover. You are just wasting time delaying it. I've had a lot of awful things happen to me and lost a lot of family/friends/partners, even lost a child. After time you'll be ok.... we will all lose someone at some point and accepting that is part of life and being happy again.
Do the right thing
Don’t worry about not breaking it off soon, it all takes time to find out whether or not you’re attracted to someone, you might have just needed longer time.
You should leave. Cut all contact with him; phone number, social media, delete pictures etc.
It’s going to be hard but that’s how dating goes man. It’s not for the weak-hearted.