Winged bean?

I spotted this growing beside one of my winged bean plant... It sure looks like a winged bean plant... I sowed the 2 seeds in January in this plot and 1 grew up the trellis while the other did not sprout. I wonder if it has finally sprouted! But, it is like after 3 months????? Will leave it alone for another week or so.. see if it is really a winged bean...