Indoor Trailing Begonia

Many years ago I had a trailing indoor plant which I believe was a Begonia. It was a prolific flowerer with small white flowers. It lasted for years then just gave up the ghost. I have lately been trying to find another the same. I bought a Begonia Solananthera which does trail but is much stiffer than my original plant and only flowers in winter. Can anyone suggest what my original plant was? Perhaps it wasn’t a Begonia.