This seems to have come with some coreopsis in a plant swap. It is about to bloom. I may have a better picture of the flowers later. The leaves are attractive, the flower buds tiny. If it's a weed I want it out before it spreads. It's about the same height as the coreopsis plant.

Jewels of opar.
Jewels of Opar (Talinum paniculatum)

Thank you. You're right. When I go to the plant database, the pictures look exactly like my little plant.