Perhaps the grass is equally green on both sides. A new study finds that people in open relationships are actually just as happy as individuals who prefer monogamy.

Researchers at the University of Michigan surveyed 2,124 people at least 25 years old about the quality of their relationship and/or partner. About 90% of those who took part were recruited from Craigslist. The sample group was found to consist of 1,507 individuals in monogamous relationships and 617 people in consensual nonmonogamous (CNM) relationships. Fifty-one percent of CNM participants were in polyamorous relationships, 25% identified as swingers, and 25% were in open relationships.

Participants were polled on areas including "satisfaction, commitment, trust, jealousy and passionate love, which is the intense love feeling often described in new relationships," according to a university news release.