EXCLUSIVE: Zachary Quinto Talks Finding Love, 'Star Trek 4' Updates & If Spock Will Beam Into 'Discovery'!

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Zachary Quinto is fully thriving in his forties!

The Star Trek actor, who turned 40 last month, has achieved massive success at the box office with a hit big-screen franchise, found "the one" with his longtime boyfriend, Miles McMillan, and is now bringing attention to a project that is near and dear to his heart.

"I feel really like I'm in exactly the place that I want to be and that's something that I feel really grateful to be able to say," he told ET.

Quinto stopped by ET Live on Wednesday morning to discuss his new project with the World Wildlife Fund and Tiger Beer to help protect and double the amount of endangered tigers currently living in the wild.

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"When I was approached about [this project,] I was really shocked because there are only 3,890 [wild tigers] left in the world, which is shocking," the Heroes alum explained. "I felt like as a well-documented and longtime animal lover, it was something that I felt really connected to and I don’t often feel connected to opportunities like this, so it was nice to feel like there was an authenticity to it."

Quinto is also spreading awareness for these endangered animals to his one million followers on Instagram by removing his profile picture to "mirror the disappearance of tigers in the wild" and he's encouraging others to do the same.

While Quinto's profile picture may be MIA from Instagram, there are plenty of photos of him cozying up to McMillan. The two have been dating since 2015, and Quinto adorably blushed when the topic of wedding bells was addressed.

"Oh, yeah," Quinto said coyly when asked if he thinks McMillan is "the one" for him. "Obviously, I do."

Quinto revealed that the couple's ideal date night is far away from the glitz and glamour of Hollywood. "I feel like it's a hike with the dogs and dinner and a movie or something. It's pretty simple," he said, adding that McMillan is quite the cook in the kitchen.

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But McMillan isn't the only leading man in Quinto's life!

His Star Trek co-star, Chris Pine, is one of Quinto's "very, very dear friends" and (like the rest of us!) he was a big fan of Pine's work in Wonder Woman alongside Gal Gadot.

"I really loved the movie and I thought the moment that it captured in the zeitgeist and the idea of female empowerment in that way was so boldly and unapologetically and beautifully done," he said.

But when will we see Quinto and Pine reprise their Enterprise roles as Spock and Captain Kirk in the Star Trek franchise? Sorry to break your Trekkie hearts, but Quinto confessed that aside from director J.J. Abram's 2016 confirmation that a fourth movie is happening, there have been no new updates.

"If I had [an update] I would give it to you. I'm expecting [the news of a fourth movie] to be true, but it’s always this way. It's like, 'Yes, we're going to do it!' but then there's always a process -- writing a script being primary among them -- and I know that's what they're working on now. I think we're all really excited to go back and we'll do that whenever the phone rings and it's J.J. on the other end."

While the fate of Star Trek movies are still up in the air, we do know that the brand new television series, Star Trek: Discovery, is headed towards our screens at warp speed on CBS All Access on Sept. 24 -- and Quinto admits that he's "very excited" to tune in.

RELATED: 'Star Trek: Discovery' Debuts Stunning First Trailer, Gets Expanded Season

CBS All Access

There's rumors floating in space that Discovery's First Officer Michael Burnham, played by leading lady Sonequa Martin-Green, might be part-Vulcan. So what does our reigning Spock think of that potential twist? "Oooh, alright," Quinto said with an approving nod. "Well, the maybe I'll have to dip in for a little visit."

On second thought, since Star Trek: Discovery is a prequel series that is taking place 10 years before Captain Kirk takes charge of the Enterprise, Quinto concluded that a Spock cameo from him "probably" won't happen.

"It's such a unique experience and it's such a unique character and I feel like I wouldn’t know how to [do it,] but who knows?" he said. "But I'm excited to see it, I'm happy that they're doing it and I think it's an incredible universe. There is an endless combination of possibilities and stories and characters and I don’t feel like they'll need me. I feel like they'll be able to create an opulent world of much drama on their own."

Star Trek: Discovery premieres Sept. 24 on CBS All Access and for more information on Quinto's involvement with #3890Tigers campaign take a look at the link here!