As if Zayn Malik quitting One Direction wasn't enough heartache, now the band's facing another big change on the road!

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The Irishman of the boy band, Niall Horan, is known for sharing adorable nearly daily videos with Mark Jarvis, the band's personal trainer, called Where We Going Today Mark? on his Instagram, which always delights Directioners. The last one from tour was on April 4 when the band played a show in Dubai.

 #wherewegoingtodaymark @jarv2475

A video posted by Niall horan (@niallhoran) on Apr 4, 2015 at 8:39am PDT

The 1D singer did bring Jarvis along to his golf outing in Augusta, Ga. as he caddied for pro golfer Rory McIlroy on April 8 during The Masters Par-3 Contest.

#wherewegoingtodaymark #bestoneever A video posted by Niall horan (@niallhoran) on Apr 8, 2015 at 3:29pm PDT

Little Mix's Jade Insists She's 'Just Friends' With 1D's Niall Horan! A few days later on April 12 there was one other Where We Going Today Mark? video from The Masters.

#wherewegoingtodaymark @jarv2475 #masterssunday @themasters A video posted by Niall horan (@niallhoran) on Apr 12, 2015 at 10:43am PDT

1D had some time off, but they're back to the tour grind as of today, June 5, with a show in Cardiff, Wales, which Horan, Harry Styles and Louis Tomlinson have all tweeted their excitement over in recent days.

Anyway, Horan broke the devastating news this morning that Jarvis won't be around for today's show or most of the European dates. "BREAKING NEWS!!!!!" Horan tweeted to grab his followers' undivided attention.

The Irishman then dished how "it's a sad day" due to there not being a Where We Going Today Mark? video.

He mentioned it's "the first time in over a year." The Irish 1D singer shared "logistical reason" is what is keeping Jarvis away.

Fans in the United States shouldn't fret too much though since, Jarvis will be back for that leg.

"Stay strong people. I know this is hard to take," Horan added about Jarvis' current departure. Jarvis tweeted in agreement with Horan that it is "a sad day," but reiterated they will be back together for future Where We Going Today Mark? videos soon.