The "Blind Side" star attended Jennifer Aniston and Justin Theroux's secret wedding earlier this month and brought her new boyfriend along with her as a date, reported Us magazine.
"He's super hot but also super normal. She's clearly happy with him. They were very affectionate," a source said.
Bullock, 51, was married to reality TV mechanic Jesse James for five years before they divorced in 2010.
She was also previously engaged to actor Tate Donovan and dated Matthew MCConaughey, Ryan Gosling and American football player Troy Aikman.