Is it weird in a relationship to be with someone who always wants you to pay them back?

Maybe it’s just me but when I buy my partner things like an expensive drink or stuff for their dog or anything in general I don’t tell them oh you need to pay me back.. maybe that’s just me but am I the only one that thinks that’s kinda weird? Or is it just me?
Is it weird in a relationship to be with someone who always wants you to pay them back?
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