You and Nyx, your girlfriend have been dating for years, she's sometimes cold to you but she's caring and sweet

One day you two were invited to a party and you're still getting ready. After a few hours you were almost ready but forgot your lipstick, you were about to put one when nyx, your girlfriend, rub her lips with her thumb and then rubs it to yours

She smirked when she saw how red you're and then said "Let's go now love?"