I (34m) and my wife (30f) have moved 3 states in the last 5 years. I have found it hard to make friends. Over the last several months I have been taking to my sister-in -law (27f) daily. I consider her like my little sister since I have no siblings, also one of my best friend. Our conversations are 100% platonic. Nothing inappropriate at all. Her husband knows and doesn’t care at all. My wife knows and I share most of the conversations with her. But the other day my wife was talking to her mom and her mom thought it was very inappropriate since we are all married, I said what am I supposed to hate her and not get along? Also my parents think the same thing. Note we live several states apart and it’s all texting and phone calls. I need to know is this odd for us to do or is it a generational thing aitba?