Am I being a jerk or not?

[gimpy117]

So Thursday, I Dropped the guy across the hall from me off at the train station so he could spend the weekend with his Girlfriend In Ann arbor. Just like the last time. So that was cool whatever...Ill drive him there for free and not expect gas money. So tonight, 3 hours before his expected arrival he texts me saying "hey can you pick me up at the train station" The problem is, I have plans with this girl i really like that I made this morning long before he called me. I feel like Its not fair for somebody who just had an entire weekend with "the girl he loves" to expect me to drop my plans with a girl i really like, you know. And by the way...he can't take a taxi because he's broke because he quit his job in the summer "because i didn't like it". While I have a car and am sitting on some cash because i worked 40+ hours a week.

But still, am I doing the right thing? or am i being an ass...you decide.