Being upfront with someone about your intentions is honorable.
Bill is on a date with Sally when Sally flat out asks Bill if he was planning on them sleeping together that night.
Bill wants to respond to Sally's question.
Bill tells Sally that as embarrassing as it is to admit it that he definitely was hoping they'd end up in bed.
Bill tells Sally that of course not, he only wants to show her a good time and take her home like a gentleman.
Sally is happy Bill finds her attractive and is attracted to his bluntness and honesty and vows to make his wish come true.
Sally thinks less of Bill because she knows he's lying, and she doesn't appreciate being toyed with and patronized.