period sex

My boyfriend and I see each other usually 4 days a week and we usually always have sex. But when I am on my period he doesn't want to have sex because he says it's messy. But I get super horny and want it so bad! I've mentioned putting a towel underneath and using a condom but his mom washes (he still lives with his mom) so he doesn't want her seeing blood on the towel. It kind of pisses me off! Does anyone else's Bloody Mary not get any love either? 😔