Represent the same way another heart figure.

Create Valentine Day Background in Photoshop CS

Blending Options-Outer Glow

Create Valentine Day Background in Photoshop CS

Blending Options-Gradient Overlay

Create Valentine Day Background in Photoshop CS

Gradient?s
parameters:

Create Valentine Day Background in Photoshop CS

Copy the last made layer and make use one more time of Free Transform option to turn it around, minimize it a little and place it the way it is demonstrated in the next picture.

Create Valentine Day Background in Photoshop CS