Michael Weatherly Brings Spicy Love Triangle to 'NCIS: Los Angeles'

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DiNozzo is in L.A. and causing trouble in tonight's episode of NCIS: Los Angeles, and ET was on the set.

Michael Weatherly's character crosses over from NCIS to NCIS: Los Angeles to track down a suspect who went missing in transit. While he's there, DiNozzo stirs up a love triangle involving Kensi (Daniela Ruah) and Deeks (Eric Christian Olsen).

WATCH: Why 'NCIS' is the No. 1 Show in the World

"I miss having fun with Cote de Pablo, so coming and playing with Daniela Ruah is as close as I'm going to get," Weatherly told ET.

And Deeks is clearly hoping DiNozzo doesn't get too close, judging by Olsen's interview with ET.

"Deeks will slap DiNozzo in the head," Olsen promised. "There will be a slap."

WATCH: 'NCIS: LA' Stars Eric Christian Olsen and Daniela Ruah on Densi: Could There Be Wedding Bells?

Meanwhile, LL Cool J told us that he's looking forward to the shakeup.

"A little magnetism never hurt nobody," LL Cool J said.

NCIS: Los Angeles airs Mondays at 10 p.m. ET/PT on CBS.