Back in November 2014, a source told E! News exclusively that the lovebirds were "casually dating." Around that time, the actors were spotted catching some waves together at Bondi Beach in Sydney.
Alicia and Michael met on the set of The Light Between Oceans, a psychological drama that finally received its September 2016 release date two years after filming wrapped.
Notoriously tight-lipped when it comes to their relationship, the duo proved they were still going strong when they attended the 2015 Infiniti Red Bull Racing Energy Station in Monte Carlo together.
Jet-setters! Fans of the longtime couple couldn't help but gush over Michael and Alicia's relationship taking a seemingly serious turn.
The Tomb Raider star kicked off the 2016 awards season by stepping out for dinner with her leading man ahead of the BAFTAs in London.
PDA isn't usually this Hollywood couple's style, but Vikander couldn't help but steal a smooch as she accepted the Academy Award for Best Supporting Actress in The Danish Girl.
These two couldn't keep their eyes of each other while spotted at the 2016 Venice Film Festival.
In The Light Between Oceans, the real-life couple play childless spouses who raise a baby they've rescue from a rowboat as their own. Naturally, complications ensue.
While promoting their latest film, the stars stepped out at the Venice Film Festival in September 2016 looking every inch joyously in love.
Alicia and Michael were all smiles as they walked the 2016 Venice Film Festival red carpet together with their arms around each other.