I'm in a sexless relationship- help?

Me and my boyfriend have been together for 5 years this year, we also have a daughter who is there this year. At the beginning of the relationship we would always have sex, but then our daughter came along... and ever since I was around 3 months pregnant he hasn't laid a finger on me, not even snogged me. I feel like I'm not good enough, although I do know he loves me as he always says it. Every time I mention the subject of sex he just says "I don't know why I don't want to" and just shrugs it off. I don't think sex is a priority in a relationship but I also think there has to be some intimacy there to show that he loves me? I don't know what to do anymore? Am I in the wrong?
I'm in a sexless relationship- help?
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