Does your man have sex with you on your period?

My fiancé and I have been together for 10 years we use to have sex on my period plenty of times in the past but now within the past three years he refuses to have sex with me when I’m on my period and of course that’s when I’m the most horny sorry if tmi... but it’s just so frustrating because this never use to be an issue and it’s not like I’m dirty bc i wash up before intercourses regardless and when i ask why he says it’s gross but if it’s gross why was it never an issue in the past so he asked me to get opinions from other people so that’s why I’m asking this?