“King of Hearts,” Cassie rides that European-pop wave that has flooded pop music over the last couple of years.

Over steady handclaps, and a escalating assortment of synth sounds, Cassie sings on the hook:

• You are the prince of charm.
• Seduction is your art.
• You never play my love.
• You're just my king of hearts.
• You are my king of hearts.

The chorus is insanely catchy on this one, so we have a feeling this is going to stick with radio.

As for the video, it’s already shot and Cassie, fittingly, is going to release it on Valentine’s Day, which tells us maybe, just maybe, it’s a gift for her “King of Hearts” — Diddy.

[Edited 2/10/12 11:50am]