boyfriend!calum would be so excited that you guys finally got together, he would make sure that you guys had some sort of physical contact. he would always have an arm around your waist, hand on your hip or lips on your skin. he would trace his fingers down your skin every time you guys were together, no matter what you were doing. whenever he got the chance he would plant light kisses on your neck that tickled you. his mouth would eventually meet up to your own lips in a sweet kisses.
