They BOTH signed. I guess you didn’t read that part.
I did read into it, and since you apparently rode the short bus, I’ll spell it out for you. I don’t know anything about the specifics of the lease, but it would make sense to me that they should both be liable, otherwise having them both sign was utterly useless. If they both signed, but the OP is the only one liable, it seems like a bullshit lease.
Here’s a clue, signing the lease doesn’t mean you have to live there, so that has nothing to do with anything. Oh…he’s not offering to pay, who gives a shit, he signed the lease.
I’m not being a smartass. Now you try not to be such a dumbass and we can all get along.