Why a hell is walked out on me?

[Puppet]

Goldhat,
Thank you. You let me get new ideas.

[Anahata]

Thanks a lot for this phrasal verb and the explanations, especially to Goldhat!

It is the first time I came across 'to walk out on'. I feel that this verb is not very common, am I right?

[Beeesneees]

It's quite a common expression, Anahata.
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Cheers m' dears!

[Deepak55555]

Please give me the meaning of "you could've asked this"

[Beeesneees]

'You could have asked this'

'Could' is a modal auxiliary verb.
Here it is used to talk about past possibility or ability. It indicates something somebody (you) was capable of doing (asking) but didn't do.
Here are more examples:
I could have gone to Oxford University but I preferred Cambridge.
He could have married her if only he had plucked up the courage to ask her.
They could have bought a house here 20 years ago but chose to move to America instead.

Often, there is a sense of criticism when using 'could have'. This seems to be the case in the phrase you are asking about.
You could have phoned me to let me know.
They could have helped me instead of just sitting there.
I could have done more to help you. Sorry.
You could have asked this question earlier.
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Cheers m' dears!

[Et-admin]

Hi Deepak, your text is similar to two different expressions. One is "you asked for this", and another is "you could have asked".

[Awat]

Thanks a lot I did not know the meaning of this expression "walked out on me"

[Steve9]

He walked out on me = He has left from me.

[Ozzy For President]