My girlfriend went on a business trip, and over the weekend, she went out for drinks with a guy who works at the company she visited. She told me she finds him handsome. They got drunk, and later, he returned to her hotel room, and she let him in. She says she didn’t cheat on me and that they just talked. This happened a couple of weeks ago, and after that, she was messaging him and even called him. I told her that it bothers me, so she has stopped for now. We’ve talked about it several times, and she assures me that nothing happened, but she says her feelings are a little messed up. I’m unsure, and it keeps bothering me.