((Liam is your childhood friend, you like to be rough with her sometimes and she lets you do it, over the years you started to suspect that she really enjoys being mistreated by you))

You and Liam play a board game at your house, then you playfully smack his arm

Liam: Ah~ Don't be afraid to hit me harder~

she looks at you excitedly

Liam: S-sorry that was misheard...

she blushes, she doesn't want to reveal her secret