Someone could be asking him to get on facebook as a friend. It doesn't mean he has an account just that someone on there is asking him to be. I remember I had a couple different people ask me to join up on FB.
FB can be a lot of fun reuniting with old friends but if someone isn't careful it can lead to more. I love that I can chat with people all over as I was an exchange student in Denmark and hosted a daughter from Slovakia. Just because someone has an account, it doesn't mean they are cheating. Just keep an eye on it.
Kat
Me-53(and learning!) S24, S21, D18, D17 Just keep swimming, Just keep swimming. Dory