No one else has done something similar? I'm a woman, and I've obviously never been a cocky male Starfleet cadet bedding a beautiful green chick, but in my dating days, I was always nonplussed by declarations of love from someone I didn't expect to give it and for whom I was not ready to bestow the same.
Usually, it resulted in some variation of, "uh. Okay. Thanks."
And even with the man I eventually married (and love fiercely to this day), the reaction was:
"I have to go."
Some people just find it weird.