Why would a man marry a woman he never was in love with?

My mother is still hurt by what supposedly my father told her way back in 2012. I didn't hear that but according to her, during an argument he told her that he always loved his ex girlfriend from his youthful years and that she's not the love of his life, never was.

This has totally changed my mother's whole opinion and views (she had lost her virginity to him when she was his girlfriend) towards my father. I can understand why some women do that; we get older and have to settle at one point if we can't get our first option or suffer unrequited love.

But honestly, if the man is the one proposal marriage and spending his resources... why would he marry a woman he never was in love with? Why would he go through all the process of giving up his freedom to start a family with a woman he doesn't love? It makes no sense. Why?

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+1 y
The ex girlfriend he supposedly always loved (according to what my mother says) has her own life, married someone else and already is a grandma. She ditched him and got pregnant by another man, whom she married.
Why would a man marry a woman he never was in love with?
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