Billie Eilish’s Brother At War With Nick Viall After Ex-Bachelor’s Girlfriend Natalie Steals Birthday Tribute Written By Musician's Lover Claudia Sulewski

Billie Eilish's brother Finneas is at war with Nick Viall after the ex-Bachelor's girlfriend Natalie Joy posted what fans thought was a beautiful tribute to her man.

While her followers commented on how touching her words were, others pointed out that the birthday tribute wasn't authentic; in fact, the words came from Finneas' girlfriend, Claudia Sulewski.

Earlier this week, Viall's girlfriend fooled her followers when she penned a sweet birthday post to show her lover appreciation.

While it caught major attention, it wasn't all positive after followers realized that Natalie copied two of Claudia's previous posts about Finneas almost word for word.

Claudia's original post in 2019 read, "that face!! my favorite thing in the world is waking up to that face!! you've flipped my whole world upside down and given every dream & goal a new meaning and purpose, your sense of humor, honesty, generosity, talent, creativity, drive, heart, vibrancy just blows my mind. you tear every fairytale to shreds, happy birthday @finneas I love you like nothing else."

A separate post written by Claudia to Finneas read, "my life partner i can't imagine a day without you close by. you are one of the best ones and anyone who's met you knows it too. i am so lucky to love you. cherishing your existence forever happy birthday my baby."

This week on Viall's birthday, September 29, Natalie posted on her Instagram a series of pictures of her and Nick together with a caption that sounds familiar.

"this man!!! you are one of the best ones and anyone who's met you knows it too. I am so lucky to not only share this life with you but to love you, and to be loved by you," she wrote. "you flipped my whole world upside down and given every dream and goal a new meaning and purpose. your sense of humor, honesty, generosity, talent, creativity, drive, heart and passion just blows my mind. cherishing your existence forever!! you tear every single fairytale to shreds. happy birthday baby i love you like nothing else!!

Talk about a double standard! Viall was once tough on Bachelor contestant Madi Prewett when she accidentally commented on her own Instagram page after presumably forgetting to switch to a fake one.

Nick slammed Madi over the incident calling her "a liar."

"We also know Madison to be a little bit of a liar...People want to forget -I know Madison wants to forget it- but her Instagram," he told his podcast listeners. "It's a fact she did that. It is silly and trivial. There's a logical explanation for it that she wanted people to like her. It's a totally relatable thing."