Not into my husband anymore

Hi,

Anonymous because I can’t bear the idea of him ever knowing I’m saying this but is it normal to not want to have sex with your husband 90% of the time? I sometimes want to and it’s like I’m insatiable but then I’ve been dreaming about my ex recently who I was so attracted to. My husband isn’t unattractive or bad at sex. I just hate the idea of taking my clothes off and being touched. What do I do?