mis ‧ placed /ˌmɪsˈpleɪst◂/ BrE AmE adjective
[ Word Family: noun : ↑ place , ↑ placement , ↑ placing , ↑ displacement , ↑ replacement ; verb : ↑ place , ↑ displace , ↑ misplace , ↑ replace ; adjective : ↑ displaced , ↑ misplaced , ↑ replaceable ]
misplaced feelings of trust, love etc are wrong and unsuitable, because the person that you have these feelings for does not deserve them:
I realized that my trust in him was misplaced.
She stuck with him through a misplaced sense of loyalty.