Firstly,hugs to all those who've lost their partners.
In the last few years,I've lost a few friends-in their forties-all with various age children,but all still at home.
Not one of their partners has dated anyone else.
Maybe they will in the future,but none are interested at present.
Many years ago,my aunty got sick,and died 6 weeks later.
Less than a week after she died,my uncle was "spotted" with another woman.
She moved in within a month,and they married soon after.
Another aunty was poorly for years,she slept in a room downstairs,and was housebound. My uncle used to bring his lady friend round,straight upstairs,so they never met. She moved in permanently when my aunty died,but they never married.
I can't imagine how I would feel,if I lost my dh,I guess you never know til you're in that position.