The One by John Marrs

A DNA test promises to reveal your perfect match—your genetically destined soul mate. Millions have been matched by the company Match Your DNA, transforming dating forever. But when five strangers receive their matches, they discover that finding "The One" is far messier than expected. Soul mates have secrets, and some are darker than others. This UK word-of-mouth sensation explores how one scientific breakthrough can unravel lives, relationships, and everything we thought we knew about love.