Seeing my gf this week!!!

Hey hey heyyyy!! I’m seeing my girlfriend on Tuesday this week and am rly excited abt that!! I’m sure we’ll have a great time but smth I need help on. My parents were hesitant to even allow me to be in this relationship, and they’ve told me not to do anything physical with her, but I feel the need to show affection to her. I was hoping to get in our first kiss, but since she’s coming over to my house, idk how I’ll do it without my parents noticing. Any suggestions that could keep them from getting suspicious?