Since Mom died, I call my dad every day. Sometimes there are specific things to catch up on. Sometimes we just chat about things that are going on in the news. Those are the normal everyday calls.
Then there are the times when I think about Mom. I often feel a strong urge to call Dad and talk to him. We typically won't even talk about Mom, but I want to feel as close to her as possible. The worst thing that happens is when I have a good long talk with Dad in the morning; we talk through all the things we could talk about for the day, but then, shortly after getting off the phone, I think about Mom and feel like I need to talk to Dad again. I'll probably wait until the evening or the next morning to call him again. I'll need to carry that added weight through the day.
The worst part of the wait is the feeling of how long I'll have to wait before I can talk to Mom again.