Pete Wentz, who is the bass guitarist in US rock band Fall Out Boy, has become a father for a second time. The 35 year-old musician and his model girlfriend, Meagan Camper, welcomed their first child together on Wednesday (Aug 20th).

Pete Wentz
Pete Wentz is now a father of two sons

Wentz and Camper are now parents to a baby boy named Saint Lazslo, who was born in Los Angeles, and their rep confirmed to People, "Mom and baby are happy and healthy, they are thrilled at the addition to the family and Bronx is over the moon to be a big brother."

The couple, who first announced the pregnancy news in February, began dating almost three years ago, and now that they are parents, wedding bells are likely to be in their future.

More: Pete Wentz Relaunches Decaydance As DCD2 Records: Why You Should Be Excited

While appearing on The Wendy Williams Show earlier this year, the host asked, "Do you plan on getting married again?" The heavily tattooed rocker replied, "I think so, we talk about it a lot, I feel really lucky. It's really interesting to be in a relationship with someone who's truly my best friend. I talk to her about everything."

Wentz is already has a 5 year-old son called Bronx Mowgli with ex-wife Ashlee Simpson, the fellow musicians married in 2008, but Simpson filed for divorce almost three years later in February 2011.

More: Drunk On Power: When Security Fights Back

Just four weeks ago, the bass guitarist shared a photograph via Instagram of a heavily pregnant Camper holding her baby bump, so it was suspected that the arrival of their newborn would happen very soon.

Congratulations to the happy couple!