New couple Cameron Diaz and Benji Madden are silent on the rumors that the "Sex Tape" actress is pregnant with their first child.

Instead, the former Good Charlotte guitarist greeted his wife a happy birthday as she turnedf 43 on Aug. 30.

In an Instagram post, Benji Madden wrote, "Happy Birthday to my Beautiful Wife. My best friend and Everything else- there's so much I could write. I'm the luckiest guy alive- I get to spend the rest of my life right here. I love this Woman!! Many more Baby!!"

A fan commented, "Every time he posts a pic with her or about her he gets so many likes its so cute."

Another agreed, "He really is the most lucky Guy alive!! Diaz is incredible, my Idol."

One of his followers gushed, "Sooooo cuttteeee benji!! Adorable man! U really deserve this luck!!"

Cameron Diaz and Benji Madden tied the knot on her Beverly Hills home attended by around 100 guests, which is quite small considering their celebrity status. The "Annie" star recently visited the Good Charlotte Guitarist in Sydney where he's temporarily based while being a judge for "The Voice Australia."

Nine months into their marriage, Cameron Diaz is already rumored to be pregnant.

"The latest baby rumors took off after the What to Expect When You're Expecting was seen covering her belly and drinking only water on a recent trip to Australia where her husband was taping The Voice alongside his brother, Joel," said Entertainment Tonight.

When they arrived at the LAX on Monday, Cameron Diaz and Benji Madden were asked by the papazzi whether the rumor that she's pregnant is true.

"The newlyweds kept quiet as they headed to their car, refusing to confirm or deny the rumors, but Diaz did hide her stomach with baggy clothes and a handbag," the report added. "ET also reached out to Diaz's rep who did not respond with a comment."