After getting off work and returning home, I pinned my girlfriend to the bed and kissed her passionately. She tried hard to push me away, but couldn’t speak. While kissing, I noticed her face turning red. We’ve been together for so long. Why is she blushing? Damn, she’s blushing? I quickly got up, my face filled with embarrassment. “Brother – in – law, you…” “Uh, where’s your sister?” “She just