OK, at least these lovebirds know to get their loving on inside of a building. A lot less cold than trying to love and embrace someone in the cold outdoors. Good on them!
I was looking in a geometry book at the library and saw regular polygons inside circles. I was curious to see how it works in inkscape. It's actually very easy with inkscape's polygon tool.
If you create any regular polygon, then snap it to the center of a circle, then you can snap the 1 node to one of the four orthagonal snap points.