Do you think I'm expecting to much of my roomie?

Last year, my lease was supposed to end April 2010 (this month). But then my friend moved to Los Angeles and needed a place to live. I offered to move into a bigger unit so he could have a place to stay without having to spend tons of money and live by himself.

In effect, my lease was extended to November 2010. He knows my plan was to move back to Florida when my lease was over, and that I was “sacrificing” by extending my lease.

Yesterday, our mutual friend said he was moving out of his place due to an infestation, and he said he was willing to take over my half of the lease so I can go home to FL.

When I asked my current roomie if he was ok with the situation, he said “let me think about it” and said he’d tell me on Saturday.

Do you think he should oblige, make a small sacrifice and live with the mutual friend for 6 months, just like I was willing to sacrifice when I didn’t know this opportunity would present itself?

Or do you think I am wrong to ask this of him?