Alexander Skarsgard & Katie Holmes Dating RUMORS: 'True Blood' Hottie 'Flirts & Hooks-Up' With Tom Cruise's Ex on 'The Giver' Movie Set?

Alexander Skarsgard stars alongside Katie Holmes in the upcoming sci-fi flick, "The Giver" -

So, did the "True Blood" hottie ignite an onset romance with Tom Cruise's infamous ex?

An alleged insider tells the popular UK tabloid Grazia:

"Their flirtation was one of the worst kept secrets on set... Nobody is surprised that they've been spending time together. They really enjoy each other's company." 

Interesting...

According to this snitch, the blossoming romance is "quite casual at the moment." But the relationship will likely grow into something more serious soon - "They are looking forward to spending more time with one another as they promote the film." 

However, GossipCop reports that such "dating" rumors are complete nonsense. Another rumored rep insists that Grazia's latest "shocker" is simply "not true." Great publicity for the movie, though!

Still, do Mstars readers think the 37-year-old Swedish actor and 35-year-old starlet would make a cute Hollywood couple?

FYI - "The Giver" hits theaters on August 15 and also stars Jeff Bridges, Meryl Streep, Brenton Thwaites, Odeya Rush, Taylor Swift, and Cameron Monaghan.