I posted this message on the Native Flowers board, but I also figured I'd post it here in case it's not a native. By the way, I'm in Northwest Ohio.

I just cleaned up my fern bed and there was a woody vine or runner of some sort growing all over. It was anchored every few feet and several vines branched off at each anchor point. It had smallish, regular oval pointed leaves and small pink flowers (it had just started to flower a few days ago). The flowers looked almost honeysuckle-like but much smaller and had no noticeable scent. There are two very old yew bushes at the back of the bed and the vines did not grow up them at all, though at some points in the middle of the bed the vine grew upwards and branched off like a shrub. I don't know if it's a native plant or not but it showed up a couple years ago as a volunteer and really took off. I don't have a means to post pictures so I hope this description is enough. Any help/pictures of what you think it might be is appreciated. Thanks!