Purple Heart (Tradescantia Pallida)
Grow your plant in bright light year-round for good foliage color. It will grow in lower light, but the leaves will be more green than purple. Give it some direct sun, but shade it from hot, noonday sun in summer to avoid scorching its leaves. You can keep your plant indoors year-round. But it can be moved outdoor in summer, provided it's shelterd by bright, direct sunlight. Also check the soil every couple days so that it doesn't dry out.
You'll want to handle this plant carefully; its fleshy stems are brittle and may break off. It's a good idea to place Purple Heart Plant where you won't brush against it.
In summer, you can expect small, pink 3-petaled flowers to bloom. Inching off new stem tips will promote branching and keep Tradescantia pallida compact. Don't toss out those cuttings -- you can easily propagate them for more plants.