I don't know what to do....

I don't know what to do... I have a 7 year old son, he's extremely sensitive, creative, and very intelligent (much more than any normal 7 year old). He's also very different.. sine he was nearly 3, he's been interested only in playing with girls things and more or less anything girly. My husband and I have never had a problem with this, we believe he is who he is and our jobs are make sure he. grows up happy and safe. We have never denied him the things he's interested in. My problem is these last several months he's become, more or less, depressed because he went from being one of the most popular kid at school to a complete pariah . He's very upset by this, and because he's got no real "best" friends. He feels like no one his own age understand/accept him. There was a boy in his class that seemed friendly to him, and I had planned to contact the mother over the summer to get them together, but the day of school he came home and told me that the boy told him he couldn't be his friend because his mom told he couldn't because my son played with girls things. I just don't know what to do to get him a friend, he's in therapy but I'm at a loss.... can anyone help me?!!! Does anyone know of a juvenile MENSA branch?