Is it normal that my boyfriend keeps talking about sex not he knows very well we will never do it unless we got married?

I have a caring supporting boyfriend he always supports me he treats me very well and always makes me feel like iam the most beautiful girl on earth and he knows how to cheer me up when i down my only problem is that he talks a lot about sex and i feel uncomfortable beacause of my thoughts and beliefs i always change the topic sometimes he says you got me of the mood but he keeps talking in normal way i mean he didn’t get angry or treat me in a bad way when i do that but i wonder sometimes does her really loves me and just sharing his feeling and what he wants to do with me or he fulfilling his desires by just talking?
Is it normal that my boyfriend keeps talking about sex not he knows very well we will never do it unless we got married?
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