well at the time of the party, u could make it tht she enters, lost in the crowd
then as shes wandering upstairs, she finds his room and enters. once she enters, she realizes theres someone in there, turning out to be him. they chit chat a bit, before he brings up he fact that he wants to talk, confessing tht he was crzy abt her, and noing tht a girl like him wud never go for a guy like him, he was scared she'd dump him or something. then as maybe she like starts babling, he kisses her, and the make out