My Husband's Lover tells the story of Vincent (Tom Rodriguez) who got his girlfriend Lally (Carla Abellana) pregnant while they were still in college. They decided to get married even if Vincent's mother Elaine (Kuh Ledesma) was very much against it. Thus Lally's married life was never smooth-sailing. But for the love for her husband, Lally endures her controlling mother-in-law.
However, when Lally got pregnant with their second child, Vincent suddenly became distant and cold towards her. Lally felt that Vincent was being unfair to her so she decided to leave together with their children. Vincent loves his kids so much, so he tried to win back his wife by proposing and this time getting married again with the blessings of the church.
Lally and Vincent's married life became better after the church wedding. But unknown to Lally, Vincent is keeping a secret from her - a secret he kept from everyone else ever since he was young.
He is a closeted gay.
