Why do I feel guilty, I’m single

So I’ve been communicating with two men I met online. The first one omg we connect on so many levels it’s crazy. We are more alike than we aren’t alike. We have the same relationship values and I can see us eventually becoming exclusive. I’ve been wanting to meet him in person but he’s pledging in college this week and doesn’t have much time. We’re meeting next week. The other man, our communication has been very platonic and casual. Nothing too extravagant, just basic conversations. But I went to visit him last night. We watched the NBA playoffs then the ending of a movie. We talked a lot too. I was cold and he said I could come a little closer but I turned him down. It didn’t feel right with him. Anyways, I kinda feel guilty that I went to see man B when I have man A who I’m so interested in.

Why do I feel like this?