My boyfriend of 3 years won’t propose. Is it possible that he doesn't love me?

I've been dating my boyfriend for three and a half years, and I've always been clear about wanting to get married. He keeps pushing the timeline back, and every time I bring it up, he seems to agree just to end the conversation. I don't know if he's changed his mind about marriage or about me, or if I'm overthinking. What should I do?

My boyfriend of 3 years won’t propose. Is it possible that he doesn't love me?
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