The days leading up Valentine's Day might be a good opportunity to talk about one of the only "psychological love theories" I've heard of: Sternberg's Triangular theory of Love. This summary is a good overview, I think (note: looks like the links in that citation aren't working).
I enjoyed asking my students to read the abstract of the Psychological review article and using that as a basis for a discussion about the theory and how well it "fits" their experiences AND what they learned in the social psychology chapter about attraction AND other sources of information.
Maybe students could make Valentines for the different kinds of love? Could be entertaining (and potentially dangerous ... :)
image credit: http://nathensmiraculousescape.wordpress.com/2011/05/31/sternbergs-love-typology/
posted by Rob McEntarffer