Collateral damage
You can’t always have the Valentine’s Day dinner that you wanted. All of the top-echelon restaurants might have been booked months in advance, so all you can do is enjoy a nice meal with your boyfriend or girlfriend at a fast-food diner. That’s definitely not the worst thing in the world, right?
Well, it can be if the couple behind you has been arguing the entire time you were there. While the OP was on shift, one of the couples got into a huge fight, which ended up with the woman tossing her drink at her guy. The drink landed on the lovely couple behind them.