The actor went on his Instagram to note a milestone for his girlfriend. It's her three year anniversary of being sober.
"Today, we lay another stone together," he wrote. "It is now 3 years since you said: I am more important than any past, demon, disorder or addiction..Where you decided that YOUR life was worth living while loving yourself. And I'm sure glad you did."
"I was obsessing over food and terrified of it at the same time," she recalled. "I was done being afraid of food and so tired of overeating and not knowing why I did it," she said.
With Valderrama by her side, Lovato told the mag that he "called her out on it."
The support can now be seen through his Instagram as he continued to write directly to her on his post. He told her he’s proud and honored "to be front row to see the world you are about to change." And he ends it with a sweet, "I love you Demi."
If this romance is not enough to melt your heart, check the video below to see 7 more that will.