Strange homosexual dream. what's the meaning of it?

The dream took place in a village where I lived during my childhood. Me and some kind of guy were hugging each other behind a house where I used to live. There were no people around and we were naked. He asked if he can grab my butt and I allowed him to. Then he asked if I'm not afraid that his sister can see us through the window. I didn't say anything as he continued touching and rubbing my butt. Suddenly, some kind of blue portal appeared and he got sucked in. The End.

What do you think the meaning of this dream is? My friend said it means that the guy is the homosexual side of me (I'm bisexual), and it got sucked it, so it means I'm heterosexual now. Although I still like both guys and girls, so it doesn't make sense. Any other ideas?