Yes, it is entirely normal for a 5 ft 9″ male to marry a 5 ft girl, or for any height difference between partners, for that matter. Height is just one of many physical attributes that people may consider when choosing a partner, but it should not be a determining factor in a successful relationship.
Love and compatibility are not dependent on height or any specific physical characteristic. In a healthy and fulfilling relationship, what matters most is mutual respect, communication, shared values, emotional connection, and understanding between partners. People come in all shapes and sizes, and successful marriages are built on a foundation of love, trust, and support, rather than physical appearances.
As long as both individuals are happy, respectful, and committed to each other, height should not be a concern. Love knows no boundaries, and successful marriages can be found among couples with all kinds of height differences.