It wasn't a real nightmare in the general sense, but I woke up feeling like it was. I'd like a little help interpreting it?

I was on a school trip, and somehow I had broken up with my current boyfriend of three years (I wasn't clear on how exactly it happened), and was going out with a guy I'm friends with but he's sort of sketchy and unattractive so it was pretty unrealistic. He was really into me in the dream, but I was kind of indifferent, which made me feel like a bad person. Every time he hugged me he would whisper "I kissed you" into my ear, like he was reassuring himself it happened. I was a little sad but I felt like I had to break up with him and get my real boyfriend back, so I did and he was upset but he understood.

I don't know why this dream was so unsettling to me, is there anything in there that is negative or suspicious, because I don't know what to make of it.