Best Pick up line has got to be the math line. And you are all correct....you don't use a pickup line to start a relationship...but then again, do you go to bars for relationships?
DG- You'll see her again. Just keep ignoring her. Play hard to get, my friend. In a few weeks, when she's sufficeintly infatuated, she'll be all over you.
Legally, an engagement ring is a conditional gift. In most states, including New York, the ring legally must be returned because the condition (marriage) was not met.