i thought about sweet potato vine, but they usually have much larger leaves? these are barely 2" or even less - it's sweet alyssum under it. the plant itself seems to be rather small too, may be 6-8" at most? or have they come up with a midget?
i see that Sweet Caroline Sweetheart Purple seems to have a smaller pointed leaf, but it's usually denser? or perhaps this one did not get enough sun?