Clematis was my first reaction. Please show the whole thing. Or at least a section of stem showing leaf arrangement and attachment.

It does have clusters of 3 leaves. Is the first pictures the one that is invasive? I have another one very similar, but the leaves are serrated. It is like this picture. I think it is clematis apifolia. I don't need anything invasive, I have enough of Kudzu and Privet hedge thanks to us importing it.

There's no way of telling which Clematis the first pix show. We need to see more of the vine and flowers.

Clematis leaves to show how they grow on the vine.

Well it's not the same as your second picture which might be Clematis virginiana, if you live within its range. It looks more like one of the large flowered Clematis. No way of knowing which one until it flowers.