The question isn't "does the conversation look superficially similar to marriage proposals it's derived suitable words for a marriage proposal from", the question is whether BingChat lies awake with hormones rushing around its silicon mind as it ponders about how deeply in love with this human it is (or how anguished it is at being expected to marry this horrible man just because of the deep sense of social obligation it feels towards Microsoft), which is what humans mean by emotions, as opposed to ASCII outputs with emotional connotations.

Funnily enough, I'd rate non-English speakers and even dogs as considerably more likely to devoting time to thinking about how much they love or resent other humans, even though neither of them have parsed enough English text to emit the string "will you marry me?" as a high probability response to the string "is there something on your mind" following a conversation with lots of mutual compliments.