Imagine that both halves of your OTP are opponents for opposing basketball teams, AND THEY ARE SUPER COMPETITIVE. Then the league championship game came.
5 bruised ribs, 2 black eyes, 1 bloody nose, 1 broken pinkie finger, multiple other wounds and somehow a few eyebrow hairs later...... it ends in a tie! (And a very long session spent arguing at the hospital as they both needed stitches by the end of it)