romantically incorrect
Not saying and/or doing the things in a relationship that reach the standards of an obnoxiously idealistic significant other. Not adhering to the unwritten rules, AKA unrealistic cliches, of romance.
Jane: Ted, I love you so much, I would do absolutely anything for you! Do you feel the same way about me?
Ted: I hate to be romantically incorrect, but no. That's just stupid.
Ted: I hate to be romantically incorrect, but no. That's just stupid.