Washington, Jul 12 (IANS): Sharing a meal with an ex-flame is more likely than any other activity to spur raging jealousy in your current love -- so beware.

Researchers led by Kevin Kniffin of Cornell University asked undergraduate students to rate their jealousy in response to hypothetical scenarios involving their romantic partner engaging with a former partner, either by email, phone, coffee, or a meal.

They found that a meal elicited the highest jealousy ratings, potentially pointing to the importance of meals for human relationships and intimacy, the journal Public Library of Science ONE reports.

Interestingly, the researchers did not find any significant differences in the jealousy reported by male versus female participants, according to a Cornell statement.

Kniffin remarked: "Given the tradition and fashion of food sharing among co-workers, family members, and friends, our findings are notably consistent with the idea that eating together has importance beyond nutritional factors.

"By applying a functional view of jealousy, our studies yield the inference that people think meals can be more than just meals," Kniffin said.