You must tell someone
how you feel about their girlfriend,
even if it is negative .
Seinfeld's dilemma of truth versus compassion was compared to to other cultural sources .
Both values are considered very important. Not offending someone for the sake of sticking to the truth. on one side vs. the danger it can lead to a phony polite society where you can never know what others are thinking of you (as illustrated in the Seinfeld ugly baby episode).
The discussion moved to terminally ill patient dilemma. about his body a Rabbinic ruling made the point that not telling the truth will create a panic in other patients who will be burdened with insecurity about their own fate.