Well you don't know exactly annep, but the content of the post usually gives a clue.
For example: "Today my DH brought me tea and toast in bed and then did all the housework" unlikely example I know ; but it would be reasonable to expect that, on this occasion, DH is "darling husband".
Example: " Today my DH took the rubbish out to the bin and dropped 3 day old fish heads all over the floor". On this occasion it would be perfectly reasonable to expect that, on this occassion, he's a "dratted husband"!
I've probably added to the confusion but, basically, it's all in the nuances and tones of the post. 