Sex and love

Nuno Teixeira writes,

After knowing about Google Trends (as far as I can remenber, from your blog), I've spent some of my time around it. One interesting trend emerges when you search for "sex" and "love". For instance, you can check that the search volume for "sex" increases around the middle of each year (at least, the years covered by Google trends), this is, around spring and summer. Curiously enough, a month or two later, you can find an increase in the search volume for "love". By the way, similar results emerge with the same words on Portuguese.

Of course, there is no objective basis to take these trends to much serious, and probably they are just a funny little bit of data. However, I would like to hear from you, someone used to deal proficiently with statistical data, some opinions.

I have no ideas on this at all. But I was motivated to play around with Google Trends. "Statistics" also has strong seasonal patterns, with a broad dip in the spring-summer and a steep drop around Christmas. "Bayes" just shows a steady decline. "Causal" drops at Christmas too, as does "social science." OK, I better stop now.