Vasconcelos, an MMA Bellator fighter, posted a touching black and white photo with his girlfriend on Wednesday, holding her tight and smiling at the camera.
The caption read, “Baby,” along with a red heart emoji.
The singer appeared on The Ellen Degeneres Show where she touched on her relationship with the fighter, saying she does get nervous when her new beau is in the ring, but doesn’t feel bad for his opponents.
“It’s a sport!” she said, laughing.
Lovato, 24, and the Brazilian welterweight, 30, were first linked back in July when an insider told PEOPLE they “had a quick fling” that ended shortly after. But the couple recently rekindled their romance, even ringing in the New Year together.
A source told PEOPLE in early January that the two were dating, following Lovato’s split from UFC fighter Luke Rockhold in December.
The pop star recently showed off her combat skills against her boyfriend in an Instagram video.
“When you kick bae’s ass,” Lovato captioned the clip of the pair playfully wrestling around at the Unbreakable Performance Gym in West Hollywood.