My brother got married two years ago to a girl of his choice but i never liked her, 'coz i think she's cheating on him. I have often seen my sister-in-law hanging out with other men in my brother's absence. She is always busy talking on phone to her make friends, and if I ask, she would make some excuse.
Don't know if confronting her would be a good idea. Should I just go and tell my brother? Or talk to my parents. Please advice.