Michael J. Fox has apologized over the debate about Taylor Swift dating his son Sam. After Tina Fey told Swift to “stay away from [Fox’s] son,” at the Globes, Fox said, “Swift writes songs about everybody she goes out with, right? . . . What a way to build a career. I wouldn’t even know who she was.” But following a backlash from Swift fans, Fox reached out to the singer. She tweeted last night, “Hey everybody, Michael J. Fox got in touch with me today and we are good. Thank you for having my back.”