Can I have your home?

So, I've been asked to housesit|catsit for my former boss' beau again. About 3 weeks ago, I housesat for the guy and enjoyed the experience. He has a lovely home in Glover Park (near Georgetown). The kind of home that made me think " I could live here" , which soon shifted to " I could marry him", and then finally to " I wonder if I continue doing such a great job housesitting, he'll leave it to me in his will"