<p>From what I have seen in that episode of 'Operation Beifong', he might or might not be gay or maybe he is Bisexual but that's not the point. The thing is you cannot tell much or come to any conclusion with just that scene. You will have to look for hints in every episode Wei and Wing have been shown and look for some signs.
</p><p>According to me I kind of 'want' him to be gay/bisexual but that look was not at all seductive btw that he gave Bolin. It felt as if it was more appreciative but it is probably Bolin's puzzled look when Wei pats him that makes one question what Wei was trying to do.
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