'Geordie Shore' Series 13 spoilers: There’s trouble in paradise as Aaron leaves; Nathan reveals that Marnie's bisexual

Relationship troubles, complications and drama turn one rambunctious party into a catastrophic disaster in “Geordie Shore: The Party Tour.” On Tuesday’s episode, Aaron Chalmers gets the shock of his life when Nathan Henry drops a bombshell on him: Marnie Simpson is a bisexual.

This prompts Aaron to pack his bags and run off, leaving his girlfriend absolutely livid. Fans are wondering how the others react, including “Geordie Shore” cast Chantelle Connelly, Chloe Etherington, Gaz Beadle, Holly Hagan, Kyle Christie, Marty McKenna, Scott Timlin and Sophie Kasaei.

Spoiler alert! This update contains more "Geordie Shore" Series 13 spoilers. Read on at your own risk if you have not watched the latest episode.

MTV has posted sneak peeks of the reality show’s third episode, which is due to air on Tuesday night. In one of the preview videos, Nathan seems to make a move on Aaron, telling the latter that he misses him the most. Nathan then rats out Marnie, who has earlier kissed Chloe. Nathan asks Aaron, “You do know that she’s bisexual, don’t you?”

Aaron clearly is not aware of Marnie’s sexual preference and gets completely shell-shocked after hearing Nathan’s news. “She’s supposed to be my girlfriend,” Aaron says. “So why the f--k am I the last to know?” He then tells Nathan that he’s done and storms out of the club. Nathan then realises the drama that he has created and seems to regret blowing the whistle on Marnie.

In another teaser, Marnie rides the gang’s van morosely – this is obviously after Aaron’s surprising exit. “I’ve never felt so alone than what I feel now,” Marnie reveals to the cameras. “I thought I could rely on him [Aaron] to be there with me no matter what, but he just completely walked out on us.”

Aaron, on the other hand, tells the cameras, that he really has no problem with Marnie’s sexuality. “I just wished she’d told us about it,” he claimed. “I’m fu---d off that she’s kissing Chloe because that’s basically cheating.” He added that he’s more furious by the fact that she couldn’t even apologise for what she did. “My head is all over the place,” he says. Aaron goes to the villa, packs his things and leaves again aboard a cab.

Later, the rest of the gang arrives at the villa and Nathan immediately heads upstairs to check on Aaron. He reports to the girls that Aaron’s gone, as well as his things. Marnie is livid with her boyfriend’s rash decision. “He’s got an issue, and instead of sorting it out like a man, he ran away from it,” Marnie says. “Aaron’s leaving proves that he has no respect for me, and no respect for the relationship.” Elsewhere, Aaron is gutted, admitting that he’s been waiting for such a long time to be with Marnie and live with her under one house again. However, with the way he’s feeling that moment, there seems to be no future for the two.

This is not the first time that the couple hit a snag on their chaotic relationship, but they’ve stayed strong together. In one episode of “Geordie Shore: Big Birthday Battle,” Aaron told Marnie that from the beginning, he wants to be with her. She replies, “We waited so long to have sex, that when it eventually happened I literally wanted to marry you.” To the cameras, Marnie reveals, “I'm so pleased that me and Aaron are on the same page, maybe this time things might finally work out between us.”

[READ: "Aaron reels from Marnie’s marriage bombshell; Gaz calls Charlotte his girlfriend"]

Find out what happens next on “Geordie Shore” Series 13, which airs every Tuesday at 10 p.m. on MTV. Stay tuned for upcoming “Geordie Shore” Series 13 spoilers and updates.