Is it okay that my girlfriend has a dad who happens to be dating my mom?

My mom and I developed crushes around the same time, I asked out my crush and she said yes. Meanwhile, my mom had a crush on the lady's dad and he asked her out, which she said yes to. Both my mom and I's dates lately have gone great and we're both happy.

Is it okay that my girlfriend has a dad who happens to be dating my mom?
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