Well.... I did not back down all the way but I did back down some. He went so far as to sign a lease but when I got back from my trip we had a long talk about things. Financially it is better for both of us to have roommates especially when my job situation is looking very dire (I am going to start a new thread asking for advice about that!)

So I laid down what was acceptable for him to stay and what was not. No emo displays to get my attention and no sales pitches to get me back. No weekly roller coaster rides!

This is a trial period until the end of the month. He seems to have taken me seriously and so far, so good.