A really big heart

Celts big man Shaquille O’Neal and his girlfriend Nicole “Hoopz’’ Alexander paid a Valentine’s Day visit to the Franciscan Hospital for Children yesterday. We’re told the staff was only expecting Hoopz, but she decided to bring her 7-foot-1 boyfriend with her. The pair visited the Hyman Novack Medical Day Care Center, exchanging valentines with the kids and helping to tap into a cupcake piñata full of treats. . . . Meanwhile, C’s guard Nate Robinson and the team’s strength and conditioning coach, Bryan Doo, spoke at the Jordan Boys & Girls Club in Chelsea.