Galium, sometimes called velcro weed.

See all those buds? That means flowers, then seeds. Lots!

AKA Sweet Woodruff.

Here is a link that might be useful: Sweet Woodruff

Looks more like carpetweed, Mollugo verticillata to me.
hortster

Here is a link that might be useful: Carpetweed

The Galium I referred to is also called catchweed.

See this
http://www.ipm.ucdavis.edu/PMG/PESTNOTES/pn74154.html

Here is a link that might be useful: velcro plant; aka catchweed, not woodruff

We call it "bedstraw" but still looks like carpetweed to me. Bedstraw is fuzzy, with no sheen. Doesn't match the OP's picture.
OP, straighten us out.
hortster

I agree with Jean....Galium aparine.

i have the same thing all over the cracks in my paver patio!

Galium aparine is what I think it is. That is not the same as Sweet Woodruff, which is Galium odoratum. Common names here are Goosegrass, Cleavers and Sticky Willy.