Octavia and Erik
It would always hurt. Erik wouldn't lie to her about that, but it did get easier to ignore. He hesitated when she started to cry before he pushed himself to be basically knee to knee with Octavia so her daughter was right there as well.
"You breathe. And when you remember how to do that you start moving and walking and you love your daughter. Clarke will help you, and if you are like me you will hate the idea that you need any help and you sill deny it and fight it tooth and nail but she will help you anyway."