My boyfriend wears my jeans?

My boyfriend is able to squeeze into my jeans and he will wear them all the time when we go out. Does anyone elses boyfriends do this? I am not sure what to think of it. They are really tight and constricting around his nuts, and it just looks painful. But he says their fine, so i just let him wear them if he wants. Should i be okay with this?
My boyfriend wears my jeans?
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