Tropical Zone Gardening: Whaat is it?????, 1 by Texasgal77

Texasgal77 wrote:
This vine with a very large leaf is growing up next to one of my banana trees. It's vine is getting thicker and thicker and higher and higher. The leaf is kind of pretty, so I haven't been concerned about cutting it down. So far I have not seen sight of "Jack" or his cows or golden eggs, so I think it's still containable! haha

Any ideas what it is? Is it invasive? All info would be appreciated!!!!