Yes that's pineapple weedI'm not sure that is pineapple weed. The flowers look right but I don't know about the leaves. They don't look as "feathery" as pineapple weed, if that makes sense. It could just be the angle of the picture.
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I'm not familiar with goosegrass and having just now done an image search for "sticky willy" don't think I'll ever look again. I'll leave this weed to Yvonne!