Is it wrong for girls to weigh more than their boyfriends?

I'm 175 cm tall and I discovered today that I weigh about 80 kg... According to people I don't look THAT heavy, but I am chubby. I am dating a guy only slightly taller than me and he weighs circa 70 kg. Do you think that's wrong?
Is it wrong for girls to weigh more than their boyfriends?
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