Will he ever forget his yearslong friendzoner?

Hello guys! I am recently seeing a guy who is very cute and seems to show interest in me. We went on several dates and have always had a good time.

However I am starting to realize that he has a woman ''best friend'' whom she knows for over 10 years. They met back in college, she got married 3 years ago and has a child. He mentions her all the time and he's told me that they talk every single day. She tells him all her secrets and he thinks very highly of her. Whenever he speaks about her husband I sense a bit of jealousy, as he is very rich and he mentioned many times that someday he wants to make a lot of money and buy all sorts of luxury things.

He never told me that they were together, but from several photos and hints from his friends I sense that at some point in the past they slept together. I am pretty sure she knows that he harbours feelings for her and she strings him along all these years (he has been single for over 10 years!!!). He even told me that he mentioned me to her and when I asked him what they discussed he was very quick to end the conversation. What really makes me suspicious is that since that day he has been acting distant and two times he was a bit emotionally aggressive towards me, even though he was very affectionate before.

I don't like to tell people what to do with their friends but I truly believe that this ''friendship'' is very weird and unhealthy. On top of that I am sensing that it has started to change our connection, even though I don't have concrete evidence of that and it's mostly my intuition.

Do you believe she could be controlling him? Is there something I can do to change the situation without being unfair towards both of them?

Will he ever forget his yearslong friendzoner?
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