You've been properly led up the garden path.
Kimi wa manmato damasaretekita no da yo.
you; buddy; pal; monarch; ruler; sovereign; (one's) master
topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis
successfully; fairly; artfully; nicely; thoroughly
to trick; to cheat; to deceive; to coax; to wheedle; to soothe and humor (humour)
indicates possessive; nominalizes verbs and adjectives; substitutes for "ga" in subordinate phrases; (at sentence-end, falling tone) indicates a confident conclusion; (at sentence-end) indicates emotional emphasis; (at sentence-end, rising tone) indicates question
be; is; indicates past or completed action; indicates light imperative
indicates certainty, emphasis, contempt, request, etc.; used when calling out to someone; used to catch one's breath or get someone's attention; yo!
Readings: クン、 きみ、 -ぎみ
Meanings: mister, you, ruler, male name suffix