Would you let a guy you have no interest in drink from the same straw as you?

This girl I met a few weeks ago have been hanging out with me and my group of friends more often. My friends were all drinking and I just wanted to chill with no alcohol. This girl kept on insisting that I drink, and I should share her drink (her drink was in a container and she was using a straw).

So we would pass the drink back and forth using the same straw. Is she interested? would you share your straw with someone you have no attraction to?
Would you let a guy you have no interest in drink from the same straw as you?
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