I think you are overthinking this. Nothing major happened with your confession. You said a few things, he said things back to you, words so far, no actions. He was gracious to you, no aggression from either side.
You are worried about your reputation- people are too busy with their worries about their reputations to think much about others’ reputations. As you know, you have lots of conversations within your own brain, all day long, correct? Concerned about how you come across to others…? So do most people, probably all. Everyone cares what others think of them.
Lead your life best you can, choose your actions thoughtfully, with awareness. Do not mistreat others, see to it that you don’t avail yourself to be mistreated by others, and you will be okay.