Macaulay Culkin Is 40 Years Old!? GF Brenda Song Pays Tribute

Disney Channel star Brenda Song is proclaiming her love for longtime boyfriend Macaulay Culkin on the famed "Home Alone" star's 40th birthday. Song took to Instagram on Wednesday afternoon to let everyone know just how much she cares for Culkin, who she has been rumored to be in a relationship with since 2017.

The two have been very private about their romantic relationship but have acknowledged in past interviews that they are very satisfied in their personal lives and every now and then a photo of the two pops up on social media.

The 32-year-old former "Suite Life On Deck" star shared a photo of herself and Culkin wearing matching PJ's ... with hers reading "Brenda" and his reading "Mack."

"Happy 40th birthday to this magical being. I could sit here and write endlessly about how wonderful, kind, loving, genuine, loyal, honest, brilliant and hilarious you are, and how grateful I am that I get to share and do this life thing with you," Song began her tribute to the legendary "Home Alone" star.

Gettyimages | Kevin Mazur

Knowing her man well, Song also joked about Culkin probably not seeing the message due to his disdain for most social media:

"But firstly, that would take me an eternity and secondly, you won’t even see this because you don’t ever use instagram. Hahaha. My unicorn that I never thought could exist, I am luckiest person in the world because I am loved by you."

The sweet birthday message racked up over 60,000 likes and was showered with love by fans and celebrity friends; like Paris Jackson who wrote, "i love you guys so much."

Macaulay Culkin / Instagram

Even though the two stars have been quiet about the details of their relationship, things have been getting serious, as they were looking for a family home last year.

As we previously reported, the "Home Alone" and Disney Channel stars stopped by an open house in June 2019 and revealed they've been looking for a new place to live.

The property they had viewed was a real stunner; located in Studio City near Ventura Blvd and featured 5-beds and 6-baths ... plenty of room to grow a family.