Brenda Song is celebrating her fiancé Macaulay Culkin on his special day, even if he doesn't feel the same way about it. As the Home Alone star marked his 46th birthday on Wednesday, August 26, his longtime partner and the mother of his two children took to her Instagram to pay tribute to her 'one and only.'

'My best friend, the best papa, my favorite adventure partner, the only person who will play Yahtzee and rewatch Physical: 100 or Squid Game with me over and over, the love of my life,' Song, 38, gushed. 'I don't even want to think of what my life would look like without you. I'm so damn grateful you were born today. I love celebrating you,' added the former Disney star.

Meanwhile, Culkin shared a reflective post of his own, admitting that while 46 as a number is not particularly unique or 'cool,' his life certainly is. 'It's not a cool number. There are so many cooler numbers,' the Richie Rich actor wrote, drawing attention to numbers such as 23 (Michael Jordan's jersey number), 99 (Aaron Donald's jersey number), or even 42 (the 'Answer to the Ultimate Question of Life, the Universe, and Everything' in Douglas Adams' The Hitchhiker's Guide to the Galaxy).

'46 is an awkward number. There's nothing to it. Check the wiki,' Culkin continued, before adding, 'But I ain't bored. This is not nothing. I see the things in front of me. We've got this.' Shoutout to all us 46-year-olds out there, he continued, adding best wishes for everyone.