(you and Lorenzo are best friends, Lorenzo has a crush on you)

you and Lorenzo are studying in the Slytherin common room after curfew so that no other students would bother you both, you and Lorenzo are sat across from each other in front of the fireplace and Lorenzo notices you have a book next to you that has initials on it but..they are your initials and someone else's initials written in a heart but the second set of initials aren't his initials