How does Brian Austin Green feel about ex Megan Fox and Machine Gun Kelly's engagement?

Megan Fox recently surprised fans when she announced her engagement with Machine Gun Kelly -but what does her ex, Brian Austin Green, think about the couple's relationship development? A source close to Brian spoke to E! to dish on the situation.

While we can't say we were too surprised at the news that Machine Gun Kelly got down on one knee for the Jennifer's Body actress, and according to reports, ex Brian Austin Green - whom the brunette beauty was with for over 10 years - wasn't that surprised either at the news.

Amid news of theNew Girl star's recent engagement to MGK a source close to Brian told E! News that the Beverly Hills, 90210 alum isn't shocked to see her get married again. In fact, according to the insider, he was "not surprised she got engaged and knew it was coming."

The source adds that Brian's top priority remains to be a co-parent to his three sons with Megan: Noah, 9, Bodhi, 7, and Journey, 5. As the insider notes, "He's focused on his kids and just being there for them."