CLIDEMIA HIRTA (L.) D. Don
This is one of the common garden weeds known by its common name Soapbush and Koster's Curse (Family: Melastomataceae). But I like it for the hairy 5-veined leaves with slightly pinkish petioles, which somewhat never fails to remind me of the plant Pilea 'Moon Valley' with small clusters of pink flowers.
2 links on this noxious weed are shown below: