AceShowbiz -

Louis Tomlinson's ex Briana Jungwirth is not happy their kid Freddie is spending time with his new girlfriend Danielle Campbell. The L.A.-based stylist made sure everyone knew it when she took to Twitter on Thursday, July 14 to post this scathing message about "The Originals" actress.

"You can pretend all you want but you will NEVER be my baby son's mother," Jungwirth wrote. She apparently responded to recently-surfaced pictures of the One Direction singer and his new lady having fun with the 6-month tot in a Malibu beach.

You can pretend all you want but you will NEVER be my baby son's mother.

— Briana Jungwirth (@realbjungwirth) July 14, 2016

LQ: Danielle Campbell & louis Tomlinson at the beach 7/12 pic.twitter.com/16UrWFmdte

— Danielle Campbell (@DanielleCamHQ) July 14, 2016

Tomlinson and Jungwirth have been in a custody war ever since they welcomed Freddie back in January. He's been seeking a joint custody over the infant as he claims his time with his son has been "inconsistent" in recent weeks.

A recent report mentioned that Jungwirth had kept Freddie away from Tomlinson because of her jealousy over his new relationship with Campbell. She has denied the allegation, though. Earlier this month, she slammed media that's been making "disparaging, hateful and inappropriate comments concerning" her and her son.

"I am sincerely sorry that you all have chosen to focus your time and attention on my life and the life of my son. Surely you must have better things to do than pry into the personal life of a single mom and newborn child. I am confident that in the days and weeks to come, you all will find that your negativity and venomous attacks were little more than time wasted," she wrote at the time.

"In the meantime - I am hopeful that you will all respect my son's privacy and find it in your hearts to discontinue the overwhelmingly inappropriate comments about me, my family, and most importantly my son Freddie. Thank you," she added.