I and my DD & DS are comfortably verbal in expressing our love for each other and have a good, transparent relationship. They're now in their 30s with children. When they took a spouse, I often ended phone conversations with "love you, bye" or a heart on a text, not thinking anything about it. After a few months/year or so, both in-laws began to ending the same way. My DD/DS have both told me in many ways their spouses are more comfortable sharing with me than their own parents. I have a friend, in her 70s, whose parents never said, "I love you" to her. I always make it a point to end with a "love you." I think so often people don't get the love and affirmation from their family we all need and they just quit expecting it. I never asked or expected anything in return, just wanted them to know I cared.