Oh god lol these aren't real, there are thousands of these, they all have 18ish attractive girls on them and they randomly invite people, just delete the thing.Unless it's someone you know.
its probably her friend posing as someone else seeing if your loyal or not.just tell her that your already dating.
I'd ditch the sure thing and go for the random online stranger.
She's not random, I've seen her at my old school.
So unfriend her, don't see the problem seeing as you don't actually see her anymore and she doesn't know your current girlfriend.
She's so beautiful.. :(
I already have a girlfriend who I love dearly.