Headaches and Hard-On's,

Why do I always seem to get turned on when my wife has a headache?

I swear its every single time.., I get hard she gets a migraine.

I have heard about girls periods lining up so could her headache cycle and my boner cycle have become aligned?

I'm not sure because it's hard to get the pattern down when I'm always aroused.

Hold on, wait a tic.., I'm always hard, and she always has a headache…

I wonder,

...does my wife have a brain tumor?