I am almost positive that what you have is some variety of gourd. It will bloom just like any cucurbit and have male and female flowers. A telltale sigh of it being a gourd are white blooms. The vast percentage of melons, cucumbers, cantaloupes, squash etc all have yellow blooms. And the vast percentage of gourds have white blooms. And it looks like the wild gourds that grow all around Texas. If it is the same it will have round tennis ball sized fruits which are totally useless. Even hungry cattle won't eat them.