A raw strength of 12? That's why he dare! You need more than that to impress him!
So, one question here. I tried resisting Bernard and indeed I got his oral action ;p. But this result is the same as the one you can get for choosing the option "kiss and unbutton him" instead of "wait for more" earlier. Was there supposed to be any other subtle differences between these two routes, since one of them requires high enough Strength but yield the same result?