Grandma has a Boyfriend! is an episode of Angry Grandpa, uploaded on May 1, 2013.
The video starts with Michael telling Grandpa some bad news: Tina (Grandpa's ex-wife) has a boyfriend. He shows him a video to prove it. After watching it, Grandpa walks out of the trailer and begins driving his van with Michael, leaving Bridgette behind. Michael tries to ask him why he's driving, but he refuses to answer. Grandpa stops at Bi-Lo, and buys a cake reading "Goodbye Tina", drinks and other food. It turns out he's throwing a party to celebrate Tina having a boyfriend, which he does along with his grandsons.