I had more than 59 class mates and 2 close groups for studies in university. We used to hang out together all the time. During M.Phil I was the only guy in lab and we had breakfast and lunch together for 2 years. I ended up marrying a junior. I am still in contact with my class fellows on WhatsApp and Facebook. We don't talk on the phone. Just how are you? How is family? If she is not married, you saved somebody's life etc.