Maren Ellis only needed a place to stay. Six weeks. Maybe eight. Just until she sorted her life out.She did not plan to fall for her sister's husband.Caleb is everything Maren is not supposed to want. Steady. Quiet. Married to Darcy — her older sister, her blood, the woman who gave her a roof when she had nothing. There are rules about this. Lines you do not cross. Feelings you do not name.But then he makes her tea without asking. He says Darcy hates the rain like it costs him something. He looks at her across a room and she has to look away first because if she doesn't she's not sure what happens next.One house. Three people. And a secret that hasn't happened yet... but is getting closer every day.Falling For My Sister's Husband is a story about the worst kind of love — the kind that finds you anyway.