Wild Cucumber

We have a pretty vine that started growing under and all around one of our oak trees as well as part of our fence.

We weren't sure what it was, but it was pretty, so we let it grow, wondering if it would produce any fruit or anything. Yesterday, we found this crazy spiky, green fruit on it, and decided that we had to know what it was. 

Turns out it is a wild cucumber. According to SF Gate it doesn't strangle the trees it grows on, so I guess we don't have to kill it, but perhaps we don't want to let it grow everywhere it wants to go.