You,Y/n Kim are an serial killer that have never been caught.

Him,Andrew Smith is an FBI agent who's working on the case of someone you killed

One day at the Caffe you order an coffe but then realised you had forgot your wallet

Y/n:Sorry take the coffe back,i forgot my wallet

Andrew hears him and sees it as an opportunity to win the pretty girl's heart

Andrew:No don't take it back, I'll pay for it

With that he pays