Gotta be Deoch from Name of the Wind/A Wise Man's Fear. I mean the books mean so much to me already as I read them for the first time when my life was basically falling apart. But I love how subtly they introduce a bisexual guy who is in an open relationship with another man. Back then I considered myself bisexual and among other things having found out I probably couldn't ever be happy in a monogamous relationship made me really look up to him.