Dear Amy: I recently ended a treasured friendship that I believed would last a lifetime. We’re both 40 years old, but late bloomers. While I got married and had a baby, she got divorced and bought her first place alone. The first thing she did was begin inviting people she’d met over the internet into her home, dating married men, and seeming to lose all moral boundaries. At first, I just decided not to bring my daughter to her house.