Sex dreams.. help!

So my husband and his brother look a lot alike, not twins, but definitely both attractive. I'm happy in my marriage and wouldn't change a thing. But my husband and I work opposite shifts, so I don't get laid as often as I would like. But here's the problem... I keep having sex dreams about my brother-in-law! I love my husband, but I think I'm also sexually attracted to his brother...

Nothing's happened, and hopefully never will, but I just don't like having these dreams! It's like a few times a month. What do i do??