On Monday's new episode of Castle, Beckett will tussle - in more ways than one! - with Michael Trucco's Tom Demming.

How will this relationship impact Kate and her partner? Executive producer Andrew W. Marlowe tells EW.com that the pair will stop fighting their feelings for each other on the May 17 season finale.

“Beckett and Castle finally realize their attraction to each other is too strong to deny, and decisions must be made by each of them," Marlowe told Michael Ausiello.

Does this mean a romp between the sheets for Castle and Beckett? Probably not yet.

But Castle’s “not-too-subtle jealousy” over his partner’s new lover will result in “a competition for Beckett’s affection," Marlowe said.

Need we even ask fans which side they would be on in this battle?

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.