Hi,
In my opinion, if a person who says they love you, is telling "white lies" then they are not being truthful.
As far as I see it there are to me no such things as "white lies" or little lies etc. As far as I see it any lie no matter how big or small is just that a lie. Trust is earned, and if this person is telling lies, then that to me is the answer to the question of how to know if there truthful. NO if you know there are lies being told then the trust is broken.
Good luck, if your partner is telling lies, don't lie to yourself that these are not lies. From my experience it can result in a big twisted mess.
Wishing you the best,
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~KRIS~
If you think you have totally gave up, you haven't, because you are here!