Love is blind

Looking closely at people's faces, I realized most ot them weren't perfect. One girl was a bit chubby. Another had too many moles on her face. And still another had a lot of pimples. The girl I considered to be the prettiest seem to be a bit on the skinny side.
Why didn't I notice these things before? I guess I worried so much about my own appearance that I forgot to look closely at other people.