Family and relationship ?

Question

One of my friend is 75 and her husband is the same age 

I had seen her last week and she told me that her husband   very suddenly had stop kissing her good night bye  

Why a man of this age had stop kissing her 

 NOte 4 years ago he did cheat on her 

but she forgave him and they continue to live together          

Update:

She did ask him and he said there were no reason

Answer 1

Maybe her husband was the one initiating the kiss perhaps she should initiate one as in it might be her turn.

Answer 2

So did the husband cheat on his wife with someone over at the local nursing home?  omg

Answer 3

She should ask him. I bet he has an answer.