Learn English – How to write : someone who don’t or doesn’t

american-englishgrammarmeaning

Please help me to understand.
My full sentence is

"… as someone who don't/ doesn't only love his…".

I have already tried them both and both sounds right.

Best Answer

Don't (do not) is the plural form, doesn't (does not) is the singular. She does, he doesn't, they do, they don't.

And, especially relevant to the question, someone does and someone doesn't.

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