"Louis is happy and very excited about becoming a dad and he thinks Briana will be an amazing mother," a mutual friend of the new parents told ET back in July. "It was a surprise at first, but he and Briana are very, very close friends and this has brought them even closer."
Tomlinson, 24, and Jungwirth were reportedly an item for a brief time in May after he split from his longtime girlfriend, Eleanor Calder, in March. He's currently rumored to be romantically involved with The Originals star Danielle Campbell after they were spotted out and about in Chicago over the December holidays.
The new dad will get some quality time with his son this year as his boy band has announced they will be on an extended hiatus. However, despite the rumors, a source told ET that One Direction has no intention of splitting up. "[Their break] remains a hiatus with the intention of reuniting at some point," the source said.