。
Tell me to my face.
Literal
Face-to-face say-[for-me-てくれ].
~てくれ is the rough male imperative of ~てくれる (the giving auxiliary 'do X for me'). Used as a direct, sometimes confrontational demand: 'do X for me, right now.' Pairs naturally with 面と向かって to make the demand for honest, direct speech dramatic — 'look me in the eye and say it.'