The Obamas are no strangers to affection, but the Bidens aren't exactly shy themselves. When Joe was first added to the Obama ticket in August, he described his wife as "drop-dead gorgeous. Things got particularly hot and heavy at the inaugural balls.
See them totally make out below.
See a slideshow of the Obamas' and Bidens' Election Night PDA
See a slideshow of the Bidens' Campaign Trail PDA
See the Obamas' Inauguration Day PDA
Read more about Jill Biden's inaugural gown