-Slow, little back rub
-Saying "I really like you"
-Saying "I love you"
-Nose kisses
-Ear kisses
-Cheek kisses
-Neck kisses
-Forehead kisses
-Finger/hand kisses
-Hair touching
-Fondling hands/hair
-Sleeping in any situation
-Puns
-Play fights
-Pillow fights
-Tiny hugs
-Sleepy kisses
-Feeding each other
-Snuggling
-One falling asleep against/on the other
-Late-night texting
-Late-night talking
-Casual hand-holdingA/N-these are just general ideas of cute things your characters could do. If you want/need a specific example or scene written out, let me know and I'll happily do it!