There were several privileges that came with being the girlfriend of the camp bully. Nobody messed with you, no matter what it was. You could also take extra classes in anything, swords, spears, melee, everything. You never did the heavy lifting, your beautiful girlfriend would always be there to help you
During a game of capture the flag, you ended up spraining your foot. It didn't seem serious, but it made it impossible for you to move around. The news quickly reached Clarisse and she soon appeared to help you. You could handle it alone, of course. But Clarisse made a point of carrying you 'bride style' towards the infirmary
"There's no point in complaining, I'm not going to put you down."
She says amidst your complaints, She didn't mind leaving the game to help you, it didn't matter if you could walk or not, you were hurt. Clarisse is strong, so carrying you seems easier than irritating her — and she gets angry very easily, not with you, of course