Nicely done. The only problem I have is the females profile. I'm assuming that's her elbow sticking out of her face, but it makes her look like a baboon. Actually, his elbow makes it look like he has a growth on his back. This would have been a 10 for me, otherwise,
I like the concept, but the outlines of the heads look a bit funny. Maybe the man could have moved a little to the right so that the heart wasn't coming out the top of his head.