But pinpointing the very moment that your feelings went from serious attraction to full-blown love? No easy task. On Wednesday, 10 romantic Redditors accepted the challenge. Below they explain how they knew, without a doubt, that they were head-over-heels in love.
"We used to be long distance. One night I was crying on the phone to him because I missed him so much. At 4 a.m. that morning I got a call saying he was outside. He drove all night to give me a cuddle because I was sad."