The couple, residents of Bandan village in Deherje locality of Thane's Vikramgadh taluka, had frequent quarrels over several issues and the husband, Sanjay Ananta Fadwale (40), also doubted his wife's character, Vikramgadh police station inspector Sunil D Nandwalkar said.
An inebriated Fadwale allegedly committed suicide yesterday by hanging himself to a ceiling fan at his house when he was alone, he said.
Later, the deceased's sister complained to police that her brother ended his life as he doubted the character of his wife and was fed up with her.
Further investigation was on.