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Lauren Conrad couldn't be happier that her Hills costar is finding romance with Star Trek leading man Chris Pine.

See photos of more Hills stars' love connections.

"He is a really cute guy, and I'm happy for her," Conrad told exclusively at a Havaiana's and Details event honoring her boyfriend -- My Boys actor Kyle Howard, 31 -- in Hollywood Wednesday.

Can you believe these stars dated?

Does Conrad think the two would make a cute couple?

"Sure!" she tells Us.

Find out what other famous stars appeared on Star Trek.

Patridge, 24, first met Pine, 28, in early April at ShoWest in Las Vegas, a source tells Us. On Friday, two weeks after the reality star was photographed outside sci-fi actor's L.A. apartment building, the two met up for cocktails.

"They text a lot and are in regular contact," a source says.