Orlando Bloom is "definitely" hooking up with Jessica Alba after their respective splits, sources tell RadarOnline.com .

Bloom and Alba are currently filming thriller The Mark together , prompting fresh whispers of an off-screen romance.

Both actors are newly single: Alba, 44, announced her separation from film producer Cash Warren , 45, in December after 16 years of marriage, while Bloom, 48, and singer Katy Perry , 40, confirmed in a joint statement earlier this year that their relationship had ended after months of speculation about the state of their engagement. Article continues below advertisement

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The former couple s

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