It's stupid for a man to start dating a woman and say I love you first. When a guy first starts dating a woman. She is checking you out. She is going to test you. To see if you are worth her getting pregnant for. She is going to see how you stack up against her other guys. So basically she will treat you nice, treat you like shyt but basically. You aren't getting the best of her.
Now during this period. You tell her that you love her. In her mind, you are now less of a man. Because how can she respect a guy that doesn't get the best of a woman and he loves it. That means that he isn't used to getting love from a woman.
Now the man on the other hand is giving his best to a woman. So for her to love the man first makes sense. He is putting his best foot forward. So she can fall in love with that man. Then when she is in love. She will give the best of herself. Then you as a man could fall in love with that woman.