No, it is not necessarily true that if a girl says "I love you" first, she loves the guy more than he loves her. Expressing love and emotions can vary greatly from person to person and depend on individual personalities, cultural backgrounds, and communication styles.
Some people are more open and comfortable expressing their feelings, while others may take more time to develop and articulate their emotions. It's essential to remember that love is a complex and multifaceted emotion, and there's no one-size-fits-all approach to how it's expressed.
Furthermore, the order in which the phrase "I love you" is spoken doesn't determine the depth of love between two individuals. Love is an evolving emotion that can deepen and grow over time, and it's not something that can be easily quantified or compared between individuals.
Instead of focusing on who says "I love you" first or who loves whom more, it's more important to prioritize open and honest communication, mutual respect, and understanding in a relationship. Love is about mutual affection and care for each other, and it's not a competition to be won or lost. Both partners should feel comfortable expressing their feelings in their own time and way.