With my corrections above, the second is grammatically correct. If I had to choose one, it would be the first. Out of curiosity, why did you start the first with "Someone" but the second with "They".Do we say "Someone means something to you in your life or they don't" or "They are something to you or theydon'taren't"?
But wouldn't the first sentence be improved significantly by rephrasing it as Someone either means something to you or they don't? Is it really natural enough as is?If I had to choose one, it would be the first.
If you have a question about the English language and would like to ask one of our many English teachers and language experts, please click the button below to let us know: