Is he thinking of proposing?

I’ve been dating my boyfriend for 6 months so far and it’s been really great and a really healthy relationship. He constantly mentions a future with me and does say that he plans to marry me. When he says this I assume in like 2 years from now, but he had mentioned getting me a promise ring, and I told him that it’s practically promising me that you’ll get engaged to me and at that point why not just wait till you actually want to propose to me so you’re not buying two different rings. Now I don’t know if he still wants to get me a promise ring it doesn’t bother me if he does or doesn’t. But he also asked if I like Yk the real diamonds or the lab grown ones and I said i don’t know the difference really and I don’t mind. We were also watching a movie yesterday and there was an engagement in the movie and he was smiling at me and had told me he loved during the movie. He also mentions his grandpa took a picture of us together and gave it to my boyfriend and told him to “give it to his future mother in law” . Also he mentions his mom really liking me based on things she says and she had hugged me the first time I had dinner with him and his parents.

Is he thinking of proposing?
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