I am a model and popular public figure currently living in Marbella, Spain. I have 5,000 friends on Facebook and anyone that I appear to date will become instantly popular with friend requests and suchlike.
See my profile: facebook.com/jemmajones.net
For this I will add/edit my relationship status for 1 week to "in a relationship" with any Facebook profile that you ask me to.
I have other gig's related to this whereby for example I will contact your friends or family and chat or friend them etc. but for the first part you would need to have me showing as your girlfriend :)