An integral part of One Direction's team won't be joining the band on their upcoming On the Road Again tour dates in Europe! Their personal trainer, Mark Jarvis, is unable to be with the group in June, and Niall Horan broke the news on Twitter.

He says that, for the first time in over a year, he won't be able to make a "Where are we going today, Mark?" video. (These videos are pretty much a staple of Nialler's Instagram.)

Thankfully, it's just for their European tour.

Mark will be back for their U.S. tour dates.

When a Directioner suggested that they continue to do the videos with FaceTime, Niall quickly nixed the idea, saying that it just wouldn't be the same.

Mark also seemed bummed about the logistics, but he's definitely not abandoning the 1D team for good.

However, fans have been using the hashtag #BringBackMark in an effort to show how much they love him.

Mark always showed Directioners where 1D was headed!

He's really a big part of the fandom.

Although we'll obviously miss Niall's videos, we're just glad that Mark isn't leaving the band for good. Everyone loves him!

Are you shocked that Mark won't be joining them on their tour? Let us know in the comments!