mis‧placed /ˌmɪsˈpleɪst◂/ 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.

[TahlilGaran] Dictionary of Contemporary English ▲

misplaced
adj.
VERBS be, prove, seem
ADV. entirely, quite, totally, wholly Her confidence in him was entirely misplaced.
not altogether | largely | rather | sadly His optimism proved sadly misplaced.

[TahlilGaran] Collocations Dictionary ▲