Asiatic Dayflower creeper (aka. Widow's Tears; aka. Mouse Flower) Scientific Name: Commelina communis.  In the Spiderwort Family.

Reclining stems with upright, leafy branches topped by 'deep blue flowers' protuding from a heart-shaped, enfolding, leaf-like bract.
Flowers:- 1/2" (1.5cm) wide; sepals 3 green; 2 rounded blue petals above 1 small white petal; stamens 6.