I like your son, I might even love him, but he is not a very good soccer player.
https://www.ef.com/wwen/english-resources/english-grammar/comma/
In this example from the resource 'I might even love him' feels more like an after thought or information that should or could be separated with em-dashes.
If you're using a listing comma in this way, shouldn't the sentence share a balance of related ideas as a rule like:
I like your son, he's very strong, but he is not a very good soccer player.
Either of those sentences can be written with commas or with em-dashes. The dashes are more appropriate in informal styles. CJ
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Either of those sentences can be written with commas or with em-dashes. The dashes are more appropriate in informal styles.
CJ