That’s the question on NCIS: Los Angeles, where the long-­simmering tension between Daniela Ruah’s and Eric Christian Olsen’s characters threatens to ­bubble over in the Season 4 finale.

Conventional relation-“shipper” wisdom says that the “Densi” banter will never come any closer to an actual romance than “Tiva” (Tony and Ziva) ever has on the mother ship, NCIS. Yet we can guarantee that some emotionally explicit, heartfelt words will be spoken between the star-crossed agents, which may be the next best thing to an actual non-undercover clinch. We sat down with the costars in Ruah’s trailer during filming of the finale — in which Kensi and Deeks are broken up professionally, as are longtime partners Callen (Chris O’Donnell) and Sam (LL Cool J) — and can assure you that the banter doesn’t stop when the cameras do.

Read the whole interview with Daniela Ruah & Eric Christian Olsen on tvguide.com.