Carolina Gardening: Can someone ID this native vine?, 1 by donnacreation

donnacreation wrote:
This glossy evergreen vine grows just about everywhere outside the boundaries of my yard. I love to see it in winter greening up otherwise boring deciduous trees . It's loaded with sharp thorns that grab and don't want to let go, but I think it's beautiful. I have an inexpensive arbor that I'm training this unruly vine (as well as native Jessamine) to completely cover. Why waste money on expensive, ornate arbors if they're going to be completely covered with evergreen vines?