In an interview with TooFab, the actor who plays the biggest movie star in the world on the show explained why he's the only cast member who hasn't seen it yet, and why his chemistry with co-star Christine Evangelista is so damn good.
"I'm the only one in the cast that didn't watch any of the episodes 'cause I wanted to watch them live with my friends and my family, so I have not seen the finale, but I heard it's incredible," he said. "I have watch parties every week. There's a little restaurant that I love in The [San Fernando] Valley, and they've got a really cool back room. You have to walk through the kitchen. There's like this secret room. They've got a huge TV back there. It's supposed to fit 15 – I sometimes squeeze 30 people in there. We have a lot of fun watching the show every week."
The E! drama wraps up its first season on Sunday, a week after leaving fans on the edge of their seat with plenty of questions: What's going to happen to Kyle's now-fiancée, Megan Morrison (Evangelista), who got kidnapped by The Institute of the Higher Mind? Is Kyle in on it? Do he and life coach Terence Anderson make amends?
"They're not in a great place right now," Henderson said of Kyle and Terence (Michael Vartan), who is also the head of the Institute.
Last episode, Kyle had just about reached his limit with his life coach, since Terence pimped the actor out in order to get out of some legal trouble. Terence is clearly feeling the pain of not having Kyle around, both personally and professionally, and it begins to affect his wife, Deann, who also happens to be Kyle's producing partner.
"Kyle and Terence have a lot of problems, and their issues are not going to end any time soon. Some things are coming to fruition that have never happened," Henderson said.
Megan ended up being kidnapped by IHM at the end of Episode 9. According to Henderson, the finale will reveal whether or not Josh is in on Megan's indoctrination into IHM, and whether or not she buys into it.
But before her dramatic capture, Megan saw a tabloid claiming that Kyle and his "The Kill Plan" co-star Amelia Briggs were having an affair. That's when Kyle took Megan to visit his publicist, who explained to Megan her love triangle marketing plan set in place to build up intent to see the film.
But all that changed when Kyle proposed to Megan before their $10 million marriage contract specified him to do so. Megan said yes (like she even had a choice), but Kyle faced little to no backlash for not abiding by the rules.
"What're they gonna do to Kyle? Is someone gonna fire him? Is he gonna lose his career? He's on top of the world," Henderson said. "I think Kyle wanted to prove something to Megan 'cause Megan was kind of in awe at this whole tabloid, story, real, fake, this kind of blurred lines between what our real life is and what our public life is, and I think Kyle was ready to show Megan that, 'You know what? Screw it all. I hear you. I know what you're saying. I know that it doesn't make a lot of sense to you, but I'm going to prove to you that I love you. I'm going to propose to you on my own terms.' And that's what he did."
The biggest shocker of all, though, happened after Kyle proposed. While Megan and Kyle were at dinner, Kyle stepped away, and a man approached Megan with a huge, shocking pill to swallow: The man had been in jail for the past six years for killing Megan's step-brother (who sexually abused her when they were growing up), except he didn't actually kill him; Megan did. The man threatened to go public with the truth if he did not get paid $5 million within 24 hours.
It's a scene Henderson described as "pretty crazy," adding that "it was probably the realest moment [Kyle and Megan] had had."
"It's a pretty crazy moment, but I think [Kyle] puts the shock aside and he wants to prove to Megan that, at the end of the day, 'I'm your partner, and we're in everything together, and I'm going to figure it out. I'm going to help you out and get you out of this, try to get me out of this, so we can move on,'" Henderson said. "This is an intense moment, and he's never had to deal with anything this real, at least we think. Keep in mind there's still a lot of secrets in Kyle's closet that we haven't dove into yet."
When asked if he had ever been a part of a romantic publicity stunt, Henderson said no.
"I have developed relationships with people that I've shot movies and TV shows with because it's a normal thing," he explained. "You're around someone a lot, you like each other, you do the same thing, you understand each other, you're compatible, you start dating, so I get that. That's a real thing. Now, have I ever been in an arranged thing? I have not. Would I ever accept an arranged thing? I wouldn't, but does it exist? Maybe."
And no, Henderson isn't dating Evangelista. He said they're "good friends," which only adds to their instant chemistry that sparked during her initial screen test to play the part.
"Christine and I are close. We're good friends," he said. "I admire her and I respect her and I think she's great. People always talk about our chemistry on the show, and it's real. That's why she got cast. I got cast before her, and I went through this whole test process with everybody. There were probably 15 girls that I tested with, and she and I – the chemistry was real, it was there. There's nothing more than us being friends. We work together and it's professional, but it's not fake. We're not trying to figure it out or force this chemistry, it just works."
"Me as Josh met Christine in the test process with the exact same scene as Kyle meets Megan with that scene in a test process first film," he continued. "It's weird. Exactly how I met Christine is exactly how Kyle meets Megan in the show. It was with that scene, and she did an amazing job on the test, just like she did an amazing job in the scene on the show. So yeah, there's a lot of art-imitating-life moments on the show."
And unfortunately for any rich women out there looking to wife up Henderson, a $10 million marriage contract simply does not entice him.
"I believe the money will always come as long as you make good decisions about your career and you keep working on your craft and you work hard," he said. "Love is a real thing, and love is way more important than money. It's what you want to live life for. It's to meet somebody and find a soul mate or whatever, and that's an important thing. I honestly could be happy broke if I'm with someone that makes me happy. If I've got a billion dollars in the bank account but I cannot stand the person I'm with, you're miserable. Money won't make you happy. I know it for a fact."
The season finale of "The Arrangement" airs this Sunday, May 7, on E!