It's strange because at present you find it hard to accept the fact that two person can share so much, stand so close, for so long, with only each other.
I wonder if they ever get tired of living with the concept of 'togetherness' and 'someone else'. I wonder if the only way they will get used to it is when they are tired of the concept of 'loneliness'. I suppose if one day that were to happen, it would mean that I'm tired of myself and who I am. Which seems to me like the saddest thing to happen to anyone.
If that is so, then I never want to part with the concept of loneliness.