Users of a online dating service are raising the alarm, about scammers setting up fake profiles.

More than 5000 people are using the dating site Twosome, which was set up on Valentine's Day.

But some say scammers have been asking them for money, after forming online relationships.

One woman says she found almost 70 fake profiles, using a website which identifies copied photos.

Twosome owner Dylan Bland says he's aware of fake profiles, and he's struggling to crack down on them.