I (20F) have a slight suspicion that I have started to develop feelings for my manager(33M)

It always wasn’t like this but in the past couple of months me and my manager have been getting closer because he’s been working on my shift more often. We work at a fast food chain and we spend about eight hours out of the day together when we work. I always do excellent work when he’s around regardless of how I’m feeling and make sure everything’s done so the next shift can run smoothly. Now I’ve been noticing that I smile a little bit too much around him and we both have inside jokes for just us. He’s also been really helpful with making a smooth transition into some new management and has been making sure I’ve been on his priority list. He put in for a second raise for me and I actually got it we had a very intimate conversation about it and it left me feeling some rye of way about him.Yeah I think I kind of do you have feelings for him because he makes me really happy and smile and I would love to data guy like him. But I just think it’s so wrong that I have these feelings and I’m feeling really guilty. I know it’s wrong to feel this way but I really can’t help it what am I supposed to do. I work with him about three times a week and it’s always the best part of my week when he’s there he’s probably one of the best guy managers and treats me a little bit extra special because I’m his favorite and others can see that. He has a fiancé and I 100% respect that but I can’t help my feelings when I’m around him all I do is smile and always get my job done just to please him but is it just me trying to be a good coworker or do I really like him please help!!!