My twin sister boyfriend

my twin sister is been missing for 1 month and my mom and I was so worried for my sister my mom and me are going to her boyfriend house and ask her when her boyfriend see me she thinks I'm her girlfriend my mom and I explain that I'm am not mina I am kaylie her twin sister and I gave him the picture of me and mina he understands and ask me where is her girlfriend I said my twin sister is been missing for 1 month and he freaked out he doesn't know what to
Do.