<human>: Can you give me the gist of the text in a nutshell?

I [23F] have been with my boyfriend [24M] for three years now and things are going really well. I'm more crazy about him now than I was back when we first got together. His family has always lived out of state, but a few weeks ago they moved 20 minutes down the road from where we live. The whole clan moved down- his mother, father, nana, and brother. My boyfriend and his brother [23M] are only a little over a year apart and very close, so he's been inviting his brother to come out with us and our friends a lot recently. 

Ever since we've started hanging out with his brother on a regular basis I started having some pretty intense dreams consisting of a devils threesome with my boyfriend, his brother, and myself. Then eventually my boyfriend was out of the picture and I found myself just fantasizing about his brother. He and his brother are super similar with the same hair, same eyes, similar build, and have a lot of the same interests.

I feel really guilty about these dreams and fantasies. I would NEVER act on them. It's all simply fantasy. But I still feel weird getting off to the idea of being with his brother. Is there a way to make the dreams stop? Is it normal to have these type of fantasies?
<bot>: Boyfriend's brother moved to town and now I find myself fantasizing about him. Wondering if it's a normal and/or if there is a way to make the fantasies stop?