We both worked most of our married lives, and found the transition to retirement hard.
Most people do find it difficult to be with their spouse all the time.
The solution we worked out was to be honest about needing to do things on our own, then making it happen.
DH potters in his workshop and I volunteer at the local museum.
DH rides his bike either to do shopping, or just for the ride most days of the week. I ride mine usually to get from A to B. Sometimes we take a ride together either just for the ride's sake or in order to go somewhere specific.
I have my own office-cum- sewing-room, where I am right now, DH is downstairs in the sitting-room on his beloved sofa watching Netflix (all right by me, as he has pneumonia right now, fortunately not too badly and it is responding to penicillian.)
Sometimes we start a project together - anything from re-arranging his workshop to make it more practicable, and believe me, if I hadn't volunteered to help, it wouldn't be finished this side of Doomsday,to making Nativity scenes, cutting hedges (of which we have far too many for two people who hate gardening, but can't stand a totally overgrown garden either.)
So sit your DH down and discuss this frankly. Perhaps he dreams of building a model railway like my DH does? He has the trains, and tracks, just needs to work out where to put them! Or does he want to travel to Timbuctoo and back before he gets too old to do it?
Married for better or worse does not mean that we have to spend all day and every day sitting in each other's pockets!
I would like to meet here someone from eastern Europe



