Why does he make every convo topic end up about sex?

He is way older than me (chillll, its not a grooming situation, we are both adults). We have the same humor and have the same opinion about things, so therefore we get along pretty well in my opinion. But every conversation turns into him being sexual very quickly. (We are not together, but i think we have a mutual attraction towards each other)

Is he not taking me seriously?

Why does he make every convo topic end up about sex?
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