Percy was very protective of his monster half-brother, Tyson.

Which was funny, if you put them side-by-side. Sure, Percy was a pretty big dude, but Tyson dwarfed him. Like seriously made Percy look like a scrawny 12 year old boy again. But Tyson was a complete gentle giant. He was really sweet and naive. He gave you a big grin and an even bigger wave.

"Hi, new friend! You date Percy?" he asked. Tyson had seen you and Percy were close-

So "must date", he decides.