The Vamps crossed a line with the girls of Fifth Harmony that should never be crossed.

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The Vamps and Fifth Harmony became great friends while they toured together in support of Austin Mahone.

Bradley Simpson and Lauren Jauregui seemed to be more than friends even as reported by Hollywood Life in November 2014, but things have gone completely sour. 

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The Vamps are currently in Australia touring, but during an interview that published on Jan. 22 with Take 40 all four members of the British band were really disrespectful to Jauregui, which basically means they were really disrespectful to all females.

The question "Are you and Lauren from Fifth Harmony still together?" was posed.

Simpson remained mum, but his bandmates Tristan Evans and James McVey had some words to share.

At first McVey said, "I haven't dated her for a while."

"I was April to December," Evans shared as McVey said, "We've all had a bit of a go," which promoted laughter from all of them.

McVey claimed he was joking and that they're all just friends, but it didn't go over so well.

The 5H girls got wind of the interview and had plenty to say in return.

Jauregui tweeted the lyric video to Big Sean's IDFWU, which she later deleted, but her bandmate Dinah Jane Hansen retweeted it with pride.

Hansen went on a huge rant, but deleted many of the tweets after the fact; however, she did leave one up. She let her sass reign.

Normani Kordei Hamilton also spoke up on behalf of Jauregui calling The Vamps "little boys" and "immature".

Camila Cabello made a valid point.

Jauregui's dad had a lot to say too.

Hamilton's dad felt similarly.

Harmonizers got the hashtag "#LaurenIsOurPrincess" to trend.

McVey tried to right things by claiming it was a joke and he meant no offense, but nobody's buying it.

He claims he loves 5H, but 5H isn't feeling the love.

 Jauregui thanked the fans for showing their support for her.