Can a 15-year-old male and a 17-year-old female get married with only the 15-year-old's parents' approval?

In every state, if you are under the age of 18, you need parental consent and/or court approval to get married. There are many states that will not allow a 15 year old to marry at all. And I have to mention that 15 is awfully young to suddenly be responsible for supporting a family. Are you going to have the financial means/ability to do that? Just something for you to consider.