Whatever sublimated feelings he may have had, Tuvok might have been a bit wary after Cold Fire. A spurned Kes would be a terrible thing to behold
He had a spurned Neelix inside him once, I don't think that sort of unfettered rejection she dolled out repeatedly ever gets out of ones craw, unless a lad can Cinderella his way into her gusset to prove her first impressions wrong.
A truly enlightened person knows that being right when she is wrong is way more important than an orgasm.
AKA: The selfcockblock.