I think it would be most fun to have a lazy day with Liam. You would just lay in bed all day in your pajamas while he only has his sweatpants on and you lay in bed cuddling and watching old Disney films, occasionally having kissing wars. He would let you wear his sweatshirt and he would play with your hair while you lay on top of him, tracing circles on his stomach. You two would sing songs together, until you end up falling asleep on top of him. While you’re sleeping, Liam would hum different songs to you.
Then he would take out his sacrificing knife and sacrifice you to the Dark Lord Satan while chanting sacrificial hymns.