boyfriend's mom wants to be facebook friends?

[that chick]

ok- the guy I'm dating is a commit ment phobe- mening he treats you more like a girlfriend if there are no labels--- I've accepted that bc I love him alot- and am scared to mention commtiment stuff because he may go away.

I've been dating a guy for about 2 years- we are not official- but we've been on vacation together, I've met his entire family on several occassions/ cook outs/ birthday parties- I even hung out with his mother. I go on movie dates with his sister- I've gone to his company picnic and met his boss and all his co-workers. -- so withthat said- I was hanging out with his mom- and she suggested that we be facebook friends-- which is awkward because-- her son and I aren't even facebook friends-- or technically in a relationship--- WHat should I do? I dont' want to offend her- I really