Does he not start sex for a reason?

Past few times it’s me who starts sex. He starts the second and third time. It’s been like this for 8 years. He will only beg for it drunk. He only starts it maybe once a week

But I know he is keen to masterbate.

But why doesn’t he start sex that much with me? Usually it’s me who says take your clothes off etc sand kisses him first etc. he only does it once a week and the second time etc.
Does he not start sex for a reason?
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