Leonardo DiCaprio & Erin Heatherton — On the Ropes

Leonardo DiCaprio & Erin Heatherton rock climbingLeonard DiCaprio“s relationship with his 22-year-old Victoria”s Secret model girlfriend Erin Heatherton really hung in the balance this week — as the couple hit up an awesomely awesome zip line together in Mexico … and we got the pics!

The exact location of Leo and Erin”s Mexican vacation is unclear — but by the looks of the photos, 37-year-old Leo and his little lady friend are having a blast south of the border.

This just in — Leonardo DiCaprio”s life is much better than yours.