AITAH for refusing to go on a trip that my boyfriend claims he can afford
Context: he is a couple years older than me and just got into an actual career field.
My boyfriend just a couple months ago got into an actual decent paying job and the first thing he did (before even getting his first paycheck) was purchase a new truck. The truck he got was older worse on gas mileage and had a lot more miles than his last truck. I told him not to do it and he still did. To add to the financial disaster he now has to pay more in gas and insurance along with his car payment.
This month we had a trip planned for my birthday and my car broke down. It's been in the shop for a while now and I'm unable to drive it it's not gonna get fixed anytime soon and we can't take his truck because it's bad on gas mileage and he can't afford an extra tank of gas. He keeps claiming that he can and I hate that I have to be a financially responsible one and tell him no.
Am I an asshole for refusing to go on the trip despite him arguing that he can afford it?