D’Angelo Russell’s summer is off to a hot start.

The Nets point guard, who is a restricted free agent this July, is said to be dating WNBA star Kelsey Plum, according to Terez Owens.

Russell, 23, and Plum, 24, a point guard for the Las Vegas Aces, were spotted at Protein House in Sin City over the weekend, and “were acting like a couple,” a source told the sports site.

The two follow one another on Instagram, and it appears the former NBA first-round draft pick has taken his travels to Spain, where he posted a few clips from Madrid to his story on Thursday.

Meanwhile, Russell’s future in Brooklyn is in flux, as Celtics star point guard Kyrie Irving could land with the Nets over the summer. But Kevin Boyle, Irving’s coach at St. Patrick High School in Elizabeth, N.J., recently told The Post that the duo can coexist.

“I 1,000% think that could work. D’Angelo knows Kyrie, likes him, respects him. That could work with both sides,” Boyle said. “I could see that blending together nicely. Not everybody fits with everybody. I don’t know why in Boston the things didn’t fit [for Irving], but it could fit there.”