But to combine causes and psychology.
Because your first lover was very kind to you.
So he is a symbol of your subconscious tenderness and dependence.
And this symbol will appear when your needs for tenderness and dependence are not met.
It is likely that there are many things in your subconscious that are dissatisfied with your present life.
So, in your dreams, you will naturally seek support.
I suggest you open your mind and develop in an optimistic direction.
Otherwise, it may lead to some bad results.