When you see a guy/girl (Has to be different gender) that looks like Harry's and Ginny's child (grown up) go up to them and yell "Marry me I need my children to go to Hogwarts!" Then walk away like nothing happened.
Marry Me!
When you see a guy/girl (Has to be different gender) that looks like Harry's and Ginny's child (grown up) go up to them and yell "Marry me I need my children to go to Hogwarts!" Then walk away like nothing happened.