Giving period sex a shot?

I'm totally up for trying period sex, but I dont know how to talk to my boyfriend about it? He seems like he would be open to it, but everytime shark week comes around we both avoid the subject. I dont know if he's avoiding it out of attempted respect for my feelings/privacy or being grossed out.

While fooling around last night I brought it up but our mouths were quickly distracted 😳

Anyone got some tips? A girl's gotta get hers.