He has his mouth open with his tongue outside. She is smiling like the spring and between the both a heart is flying, or better two hearts if you take a deep look.
Two hearts beat as one I will call this picture after an old U2 song. Found it on a wall in the deep woods of Saxony where the russian army has had her barracks 40 years ago.
The painter is unknown, but the complete wall is coloured by the same genius hand. Impressive.