He doesn’t want to have sex?

Me and my ex were dating two years ago, we had sex 3-4 time out the week. Sex was never an issue for us. We broke up last year and started dating each other again this year. He barely wants to have sex now. The thinks that used to turn him on about me no longer turns him on. He claims he’s stressed from work, and we’ve known each other and gotten comfortable with each other. However, when I want to have sex he refuses me. He barely even likes cuddling with me. I brought this topic up to him but now he thinks all I want is to use him for sex but that’s not the case. He’s 39 going on 40 and I’m 27.
He doesn’t want to have sex?
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