My boyfriend wishes I were skinnier?

My boyfriend and I have been together for almost four months. And while I am a little chubby (I’m 5’5 and 200 pounds), I have been the same size since we met and have even lost some weight since then. However despite him constantly saying how he loves my body and how I don’t need to change and how I shouldn’t be self conscious... he recently told me that he wishes I were skinnier. We haven’t talked about it anymore since then but now I don’t know if I’m comfortable enough with my body around him anymore. How should I address this conversation and is it irrational of me to be upset about this?
My boyfriend wishes I were skinnier?
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