Relationships on ABC's Castle are never stagnant. Fantastic Canadian co-stars Nathan Fillion (Castle) and Stana Katic (Beckett) bring the heat to their partnership week after week, but it certainly isn't exclusive.The latest love interest for Beckett will be none other than Michael Trucco, the sexy Battlestar Galactica alum fresh off of a guest appearance on V. He will be kicking off a multi-episode arc on Monday's episode "Den of Thieves"as Detective Tom Demming.
