Ashton: he would be scared that you would get in trouble so you would go over and sneak yourself inside.
Luke: he'd help you out the two of you would run to a random park and stay until 5am.
Calum : he would climb up a tree into your window so he could cuddle with you until you fell asleep.
Michael: he would sneak in certain times. Like certain times to dye his hair or video games or sex.