I “liked” one of my co-workers on Hinge simply because I recognized him. He took it the wrong way and now he likes me. Help?

I have a co-worker who I am cool with at work. He and I joke around to make an otherwise boring, miserable job go by faster. One day, I saw him on a dating app called Hinge and thought that it would be funny to like him. He liked me back and I send him a message saying “you look familiar? 🤔”. He played along and I just assumed that it was understood that is messaging back and forth was just friendly banter.

Things are now awkward and I’m uncomfortable at work because it’s obvious that he is thinking that it is more than what it is and he is showing signs of liking me. I try to avoid him and brush him off and I feel bad about it.

I don’t know how to let him down gently without hurting his feelings.

Help?
I “liked” one of my co-workers on Hinge simply because I recognized him. He took it the wrong way and now he likes me. Help?
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