1. First, what we gotta do right here is go back — back to when Ari and Mac started talking, **sigh,** on Twitter. Twitter: @MacMiller The year was 2012, when Grande sent out this fateful tweet. Which is to say, like a coupla cute teens, Grande and Miller first got together as friends thanks to a Twitter DM. 2. The aforementioned duet was released a few weeks later, just in time for the holidays — and oh yeah, it just happens to be THE MOST SENSUAL Christmas song ever. View this video on YouTube youtube.com Imma stop right here and say that if you haven't discovered Grande's later holiday EPs, Christmas Kisses and Christmas & Chill, please go address to that issue now and come back to this list later. I'LL WAIT. 3. Then, in 2013, their professional collaboration ramped up in "The Way," which was released as the lead single for Grande's first studio album, Yours Truly. View this video on YouTube ArianaGrandeVevo / Via youtube.com On-set chemistry aside, the track is a clear and super cute testament to the pair's compatibility as creative partners. 4. But yeah, about that chemistry though... **fans self vigorously** View this video on YouTube youtube.com In an interview for Cosmopolitan's April 2017 cover story, Grande reflected back on their first encounter as an instant connection, saying, "We have loved and adored and respected each other since the beginning, since before we even met, just because we were fans of each other’s talent. We weren’t ready at all, though, to be together ... We both needed to experience some things, but the love has been there the whole time." 5. And in 2016, Grande and Miller teamed up once again, this time for Miller's fourth album, The Divine Feminine. View this video on YouTube youtube.com According to an interview with People, Miller said the song brought the two friends even closer together, and that they immediately clicked again. "It was great. There was no awkwardness or weirdness, it was how it always was ... Just both of us older, more mature and more sure of ourselves. When we first recorded together we were young and figuring it out, which we still are, but now seeing her growth and my growth – it’s great." 6. And the rest was history: by the publication of her 2017 Cosmo cover, Grande opened up about their relationship, and all Mac & Ari shippers lost their minds. Cosmopolitan Magazine When asked, "So how did you know it was the right time?" Grande said: "The universe, man. She was belting in our ears." BRB melting. 7. And the two have been giving us serious goals ever since. Just look at their Halloween couple's costume game: View this photo on Instagram instagram.com For Halloween in 2016, the Grande and Miller dressed up as the star-crossed young couple from Moonrise Kingdom. View this photo on Instagram Instagram: @larryfisherman And also staged maybe the most fun Pikachu/Evee photoshoot of all time. This year, the pair went as Katinka and Mugatu and Zoolander. View this photo on Instagram instagram.com The couple that wears wigs together, stays together, amirite?? 8. They take the cutest photos... View this photo on Instagram Instagram: @larryfisherman For anyone wondering whether Grande REALLY fit on that stool, here's conclusive proof that homegirl can balance on ledges like nobody's business. 9. Seriously, the cutest. View this photo on Instagram Instagram: @larryfisherman 10. They repost memes of each other... View this photo on Instagram instagram.com Honestly, their respective Instagrams (@arianagande and @larryfisherman) are genuine treasures. 11. And generally love goofing around... View this photo on Instagram Instagram: @arianagrande In an interview with People, Miller said, "She’s very caring but, also, we have a lot of fun. We go on adventures. Adventures can be driving around in the car aimlessly. It’s great to be able to do nothing and be doing so much.” 12. They travel together... View this photo on Instagram instagram.com Miller posted this photo to his Instagram on Grande's 24th birthday this year, captioned: "Happy Birthday to this adorable pure soul who has reminded me what being happy feels like. Thank you for loving me so good. I think it’s supposed to be ‘so well’ but I don’t care. I love you and can’t wait for all of the adventures.” Um **melts & then instantly evaporates** 13. They're not afraid to talk about their feels... View this photo on Instagram instagram.com In a 2016 Vogue interview, Miller spoke about his relationship with Grande and confessed, “I think a lot of times people just want to be cool, and to be in love is not cool,” he said. “But I think it’s the coolest. I think love is the coolest thing that there is.” 14. But they also like to keep their private life as, well, private as possible. View this video on YouTube youtube.com When asked by Ryan Seacrest during a radio interview in 2016, Grande blasted the host for reading too much into a recent Instagram. "If I post something, that's what I'm willing to share at that moment. That doesn't mean then you, Ryan Seacrest, with millions of listeners are entitled to more information." And, when asked about his collaboration with Grande in "My Favorite Part," Miller told Vogue, "I’m not trying to sit here and market my relationship, but I’m not trying to not talk about that song. That song is beautiful and it’s an aspect about my life. I’m still trying to figure out how to navigate [talking about my relationship]. It’s tricky. " 15. Just as importantly, they're there for each other during tough times. View this video on YouTube youtube.com Several days after the Manchester terror attack at Grande's concert, Miller had canceled two festival performances to be with Grande, and this performance together — of **their song** — later at the One Love Manchester benefit concert is a tearjerker, I am warning you. 16. Oh, and they're possibly — POSSIBLY — engaged?? Yanisa x @Yanisa_xx @ArianaGrande Are you engaged ??!! 😵❤️❤️@MacMiller @ArianaGrande 😍😍 03:42 PM - 05 Jun 2017 Reply Retweet Favorite Following their One Love Manchester performance, fans noticed the fuck out of a huge diamond ring on Grande's left hand, though the ring had also made an appearance earlier in the year as Grande was preparing for the Dangerous Woman Tour. 17. And whether or not that's true, one thing's for sure: there's something ~dangerous~ and ~divine~ about these two together. View this photo on Instagram Instagram: @arianagrande Mac + Ari = 4ever, please and thank you.