AGONY: I can't stand my husband's routine sex demands

I am 22 years old. I will be 23 in December. My husband is 32 years old. I got married in April of this year and my husband has sex with me every night.

Sometimes when I am seeing my period he wants me to have sex with him. When I complain, he says that the main reason he married me is to have sex and nothing else.

I asked my husband if he didn't love me when he married me and he said yes, but he loves other girls just the same. He chose me because I am more attractive than the other girls.

Is sex the only reason a man gets married?

Sometimes I am afraid to go into bed because I know what is waiting on me.

Sometimes I have to pretend as if I am sick, especially when I am seeing my period, to get my husband to leave me alone. I am not short on anything. What can I do?