Firstly: No your out of game request is not too pushy. Desiring Harmony at the table isn't a bad thing.

However, at this point I don't see n acceptable path for you to pursue the matter any further other than changing your character's behavior. Unless the PCs are all members of a club that allows lying to and manipulating outsiders while demanding honesty and loyalty internally, the other character has observed yours shamelessly manipulating people and being very good at it. The only logical course to avoid manipulation is to completely stonewall you.