Jennifer Lundquist is a US-based sociologist who has studied racial preferences in online dating.
The study found that race plays a big part in people's decisions about who they choose to contact and respond to online.
Sophie found Asian men attractive but says it was shared values that was most important.
John and Edelisa met on a dating site called Filipino Cupid.
It found that heterosexual men of all races respond to all women except for African-American, and that women of all races respond first to Caucasian men. He says "multi-ethnic coupling" will become increasingly more common as time goes by – it's an inevitable consequence of the proximity of so many races in the same place. JENNY BROCKIE: So is it purely physical or is it a mixture of a whole lot of things?