Hmmm kinda lame question buh its still important ....soo well help me out ....?

Okay this chick likes my bf but well hez mine n i'm nt in the mood to share,neither is he into her...oh well i wanna make her jealous i wanna show her that she can't have what's mine....so ahemm how do i do that??? Well m 17,i'm thinking of ummhh well kissing him or hugging him in public buh not everyone appreciates PDA,so ny ideas....help me out...