Orlando Bloom celebrated ex-wife and "amazing" friend Miranda Kerr on her birthday Thursday.
"#HAPPY BIRTHDAY to an amazing mother co-parent and friend," he captioned a photo of their son's homemade sign reading, "I [love] u mum."
Bloom and Kerr split in 2013 after three years of marriage, but continue to co-parent their 6-year-old son, Flynn.
The actor has since dated singer Katy Perry, while Kerr got engaged to Snapchat founder Evan Spiegel in July.
"Orlando thinks [Evan is] great," she added. "We're just a modern family now!"
Bloom had warned Kerr in August 2016 before photos surfaced of him paddleboarding nude with Perry.