If this happens contact the dating provider immediately to not only protect yourself but other users too.
Creating your online dating profile: protect your identity and personal information Be Anonymous - Choose a username that doesn’t let everyone know who you are.
My friends were dating or married, so I didn’t always want to be the 3rd wheel.
As a member, I met some great people, now dear friends and had the chance to do some really cool things that I wouldn’t have done on my own (or known about).
Therefore, don't get a false sense of security because you're on a dating site; do your own research to learn more about someone and make informed decisions before you decide to meet.