The 38-year-old actor said the "Poker Face" hitmaker is going to slay the silver screen in her upcoming movie "A Star is Born", reported Entertainment Tonight.
"That's fantastic! She is gonna SLAY that! I'm excited. I'll be there opening night, front row, popcorn ready," Bomer said.
Bomer and Gaga worked together in "American Horror Story: Hotel," the fifth season of the FX horror anthology television series.
He joined Lance Bass, JC Chasez, Caitlyn Jenner, Jessie J and Stevie Wonder at a ceremony to support the victims of the gay nightclub shooting in Orlando.