For context, myself, 2 other guys and 3 girls went out to eat at a steakhouse today. Not a date type of thing at all. Simply grabbing food after hanging out. The 2 guys both got 16 ounce steaks while I opted for a more modest 8 ounce. The girls all got food as well as alcohol, which we all know runs pretty expensive at restaurants. When we were finished eating, the waiter came over and asked if we wanted split checks. Before anyone could think about it or consult, my one friend immediately said, "nah, just one check". The girls looked pretty shocked and I just looked over with a "wtf dude" kinda face. The other friend is kinda shy and just went along with what the first guy said. The tab came out to be $164 dollars, and the guy who opted for one check didn't even have enough funds on his card to pay for it. So the other guy paid and we would venmo him back. Even after this, the girls insisted on paying us back for the food, and were pretty firm about it. But guy #1 continued to shut them down and kept saying "nah, **WE** got it". Its nighttime now and he's demanding me to venmo $55 to cover "my share" of the tab. I explained how it wasn't fair that he essentially volunteered me to pay for their food. I got the least expensive meal out of the 6 of us, and yet I'm paying as if I ordered half the menu. I'm getting shit for it and being told to just suck it up and pay. Oh, and by the way, we're all college students. Personally, i'm paying back loans as we speak and working part-time. I intentionally order smaller meals at restaurants and rarely go out. Now I'm expected to just throw $55 out the window for no reason. AITA?