It should be a good thing that the person you like in your dream ignores you. If you dream that two people are particularly happy together, it's just a dream.
I think you like someone in real life, but you have a crush on each other and dare not express it. He has a girlfriend in his dream, which leads to heart disease, and it is also your biggest concern in reality.
I suggest you take the initiative. It is actually the easiest for a woman to chase a man.