bruh :(

Just ignore them. Someone started this nonsense, and now everyone jumped on the bandwagon and got paranoid. Just judge for yourself after reading the manhwa. Personally, I found nothing suspicious. Usually, at this point there are already signs, but the only questionable thing he did, was to speak to Shanon alone, and he already explained that it was for Violet's sake. Could he have lied? Yes. Were there any other signs indicating that he would lie? No.
I would like to believe, that he is trustworthy, and not a yandere.