He wanted me to wear his t-shirt during sex?

So we had finished one round and cuddled afterwards, he the sat up and asked if I wanted to wear his shirt and I said yes...30mins later we were back at it again and I went to take it off and he almost yelled "no! no keep it on" honestly he's always complimented my body so I didn't feel insecure or anything but I just really didn't want me to take it off and I was confused... the next morning he saw I was still wearing it when I left and didn't mention anything about it... what's he thinking?
He wanted me to wear his t-shirt during sex?
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