I somehow wound up with a man who was homeless or in a bad situation. He was dirty and hungry. He was also extremely attractive, with long blonde hair and gorgeous eyes. I gave him food and took him to my house to take a shower. I had to pick him up and carry him into the bath because he was too weak to stand in the shower. Someone at the house tried to convince me to get in the bath with him. Within the context of the dream, not only was this sexual, it would mean I'd be claiming him as my own. Even though I was strongly attracted to him, I assumed he didn't want me, so I refused.
The house promptly flooded and Robert Downey Jr. appeared to convince me otherwise, saying the house flooded because I refused. I still held my ground and didn't get in. The poor homeless guy had no idea what was going on and was worried about the rising water. Probably wished he had never agreed to come with me.