Take after that a brush with blurred edges and white color to draw on each of the represented hearts a flare on their left sides.



Make a click now on the mouse?s right button on the first gradient layer to choose the option Create Layer. Erase now the layer having curved figures on it and keep only the gradient layer.



Choosing this layer, select in the upper menu the next combination: Filter/Render/Lens Flare?
and insert the parameters from below.





This is the final result!