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This is the most romantic graph you will see today.
Reddit user Sesipikai wore a heart rate belt during a trip to Rome with his partner where he planned to propose.
Part of the reason, he said, for wearing the device was to find out what happened to his heart rate when he popped the question - whether he got a yes or no. When he returned home engaged, he exported the data to excel and made this graph, measured in beats per minute.
With thanks to sesipikai for permission. And congratulations!