Demi Lovato and Luke Rockhold Make Things Instagram Official After Nick Jonas Crashes Their UFC…

Don’t have a heart attack Lovatics, but Demi Lovato appears to have experienced quite the special weekend.

One day after the “Stone Cold” singer stepped out holding hands with Luke Rockhold outside Madison Square Garden, the famous pair headed to Instagram to post their first pictures together.

Luke kicked things off early Sunday evening when he shared a photo of himself next to Demi at UFC 205.

Soon after, Demi posted (then deleted) a photo of herself boxing with an unidentifiable individual. Could he be the one and only Luke? Whoever it is, her caption stated she was “so happy” before adding a pink heart.

She later posted the same photo as Luke with the message, “About last night…”

For those who missed Demi’s Saturday night, the “Heart Attack” singer was able to attend UFC 205 with her rumored boyfriend.

Nick Jonas also tagged along and was able to sit right next to the pair. The “Jealous” singer posted a few Snapchats from the event and yes, he appeared to be a fan of his BFF’s new man.

While fans may be quick to call this a new romantic relationship, a source shared with E! News last week that Demi is keeping things fairly causal for the moment.

“Demi is hanging out with Luke. It’s pretty new and fun at this point. She likes being around him,” a source revealed to E! News. “She just got out of a serious relationship [with Wilmer Valderrama] so she is not looking for something that serious but if something evolves naturally over time she is willing to go with it and explore it.”

Our insider added, “She thinks Luke is a cool dude and he makes her smile. She is the kind of girl that takes [things] day by day and just lives in the moment.”