The vine is a Passionvine. There are many varieties but this one may be a native species called "Maypops" or passiflora incarnata.

The flower appears to be white but if it is actually a pale purple then you have a nice vine that is also a host plant for both the Gulf Fritillary butterfly and the Zebra Longwing. I see you are in Arkansas, so I don't know if you get these two butterflies there but the eggs are laid usually on the newest most tender growth. Frits lay individual eggs that are tiny and yellow while Zebra Longwings lay them in clusters. There may be other butterflies in those families that will use it in your area.

The vine can be invasive in that it grows on a runner underground and will often come up about 3-5 ft from where the original plant is and then continue to move out from there. It does die back in the winter and will come back up next spring in another spot, again away from where it was originally planted.

The fruit is edible but not desirable to eat as other passion fruit are.

I love the vine, I have a hard time finding it out in the wild here. It used to be found all over the place. There are many hybrids that will look similiar but have 5 lobed leaves instead of 3.

I would keep it and watch for butterflies. BTW, I am in Florida.

It's a passiflora, "passion flower". If it's growing wild there, it's probably passiflora incarnata, though it's usually more blue to lavender than your pic. There is a white variety, but it's uncommon.

Thanks! It's been growing wild here for about 3 years that I've noticed. I'll now be able to read up on it. Thanks again!

Yep, this one is light lavender flowers - the pics show whites than actual. Thanks for the info :)

For what it may be worth, here's where the "Maypop" name comes from. If you pick one of the ripe fruits and throw it down forcefully on a hard surface, it splits with a satisfying (at least to nine-year-olds) POP!