What should i do? I LOVE MY COUSIN?

I'm an indonesian girl and I have a Cousin he is scottish. i often talk to him by email or phone even that far,I'm very happy when he came to jakarta My country. my feelings on pounding while pick up him at the airport,,after that he stayed at my house for a few days we also spend time together,, and then he said I'll back and marry you,,he said as hugged me actually i love him too i can't stop thinking about him,,, i miss him so much :'(