Well, don't these two look cute together?

Christina Aguilera took to Twitter in honour of fiancé Mathew Rutler's birthday on Wednesday to send her man well wishes via her social media page. "Birthday week for the birthday boy- Lots of love & blessings to celebrate!," the soon-to-be mother of two captioned a photo of the lovebirds, who are expecting their first child together.

Aguilera's smiling from ear-to-ear in the precious pic of the expectant parents while strategically placing her arm around her man in order to flash her stunning engagement sparkler. The pop star, who met Rutler on the set of her 2010 film Burlesque, announced the engagement news via Twitter on Valentine's Day by posting a sweet photo where she's holding her man's hand while wearing her gigantic diamond ring. She captioned the pic, "He asked and I said..." (obviously the answer was yes). Less than two weeks later, confirmed that The Voice judge is expecting baby No. 2, her first child with Rutler and we now know the couple's baby on the way is a girl. The blond beauty is already mommy to Max Liron, 6, her son with ex-husband Jordan Bratman.

While Aguilera has yet to comment on the pregnancy news (and has barely showed any signs of a baby bump), the proud mama couldn't help but gush over her son back in 2010 shortly after news of her divorce from Bratman broke. "He's the love of my life, and I adore him. He's such a character, and he's so happy and at the end of the day, that's what's most important," she told Ellen DeGeneres.

Aguilera and Rutler currently reside in the Grammy-winning vocalist's new Mulholland Estates mansion in Los Angeles, which she bought in April 2013 for $10 million. Happy birthday, Matthew! Photo: Twitter