The whole One Direction fandom was shaken when the news of Louis Tomlinson getting stylist Briana Jungwirth pregnant broke a few weeks ago.

And now, a fresh news update claimed that the One Direction singer may not be the father of Briana Jungwirth's baby after all.

"Someone very close to Briana says Louis wasn't the only guy she was hooking up with when she got pregnant," a source close to Briana Jungwirth told In Touch. "She was having sex with someone else at the same time, so the baby may not be Louis'."

"Once the baby is born, it looks like Briana will have no choice but to get a paternity test," the insider continued. "The situation is so messed up."

Amid news reports centering on speculations that he's not the real father of Briana Jungwirth's baby, Louis Tomlinson is reportedly determined to be the best father he can be.

"Louis doesn't want to hear about the rumors that he's not the real father of Briana's baby. He thinks that is crazy," an insider told Hollywood Life.

"He believes with all his heart he is the father. He has accepted it and is truly excited to raise him."

After the latest news update about paternity rumors, does the Aussie group The Janoskians regret all the negative comments they've hurled at Louis Tomlinson for allegedly not thinking of "responsibilities and consequences"?

The Janoskians, which some claim to be the Australian equivalent of One Direction, recently slammed Louis Tomlinson for fathering a baby with stylist Briana Jungwirth.

"Should have worn a condom. You have really got to think about the responsibilities and consequences of your actions; at least I have been safe and I have been doing that my whole time as part of The Janoskians," Jai Brooks said about the One Direction singer, according to Dish Nation.

"When it is raining just wear a raincoat. One mistake can haunt you for the rest of your life," Beau Brooks added. "Be safe and make sure you know that every decision you make is the right one."

The Janoskians are yet to react about the update that Louis Tomlinson may not be the father of Briana's baby.