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You draw me in just enough, then act like you don't know me.
Literal
Me [object-を] good-point [up-to-まで] draw-in-[prepare-ておく]-[sequential-て] after [topic-は] unknown-face.
A colorful accusation, ending in an emphatic fragment. ひきつける ('to attract, draw in, fascinate'). いいところまで ('up to a good point,' i.e. hooked in, committed). ~ておく + ~て sequential is interesting — 'having set things up so I was drawn in, then...'. しらんぷり ('feigning ignorance, playing innocent,' from 知らない + ふり 'pretense'). The sentence ends abruptly without a verb, an elliptical complaint — characteristic of emotional colloquial speech.