But as Hollywood (and real life) has proven too many times over, love isn't always enough and love doesn't always laugh.
Ariana added animal ears and snout with a fun filter.
While neither party has confirmed the sad news, they haven't gone ahead and denied it either.
However she plans to keep their teacup pig called Piggie Smallz, that they adopted last month when they were still in a relationship.
Michael Schumacher's son Mick claims European Formula Three title
The presence of the German teenager with the famous name generated huge media interest in F3 this season. The former Ferrari driver's privacy is closely guarded at the family's home in Switzerland.
The singer took the opportunity to promote her upcoming appearance in a musical called Wicked. "She was incredible, she wore a green satin top and sang 'The Wizard & I'". The two had been together for over two years.
In an interview with GQ, Davidson said that he was ready to pick out a ring for Grande the day they met.
In the wake of the break-up, SNL regular Davidson deleted all of his social media accounts, and has cancelled a number of stand-up gigs.
"There is a possibility the couple could get together as they really care for one another, but right now they just needed to step away and regain some clarity on their wants and needs".
The 25-year-old singer has had a hard few months, following the tragic death of her ex-boyfriend Mac Miller in September and her recent split from Saturday Night Live star fiance Pete, and has cancelled various appearances - including a performance at a cancer benefit over the weekend. They were engaged after a month of dating.