Ok- couch opinion needed.

Most of you know that T's kids go to the same school as my kids, our girls dance at the same studio, so I have a friendly relationship with T's wife. We speak when we see each other at school, and dance. I got together with her once this past summer to talk homeschooling as I was thinking about it for my son and they homeschooled for a number of years. So, anyways.. She sent me a friend request on FB this evening. T and I have talked about FB and being friends. He has said that he is not friends with any of his clients on FB.. Though he has sent me a couple of links via FB of articles for me to read concerning subjects we have talked about. So, I know his FB is locked down.. BUT- is it wrong for me to be friends with his wife? I could, accept the request and leave it at that, I could email t and ask before I accept, or I could accept and tell T in two weeks when I see him again. I would love to hear the couch would handle this. To be clear... I am friends with her and wouldn't mind interacting with her on FB.