Joshua Jackson and Katie Holmes have reignited speculation about their long-rumored romance, after the former Dawson's Creek co-stars were spotted looking inseparable on the set of their new film Happy Hour , RadarOnline.com can reveal.

Holmes, 46, and Jackson, 47, secretly dated during the late 1990s while filming the hit teen drama, before calling it quits after a year. Article continues below advertisement

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Their on-screen chemistry as Joey Potter and Pacey Witter mirrored their off-screen relationship, with Holmes telling Rolling Stone in 1998: "I met somebody last year, I fell in love, I had my first love, and it was s

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