Whenever I meet a girl I start building our mutual future in my head. I start dreaming about how amazing it can unfold for us.

And later on when it turns out that a girl is not down to my plan I become extremely disappointed and feel a huge depression which lasts until I meet another girl. Then I have a brief moment of placidity and after that the story repeats itself.

As a result I have no relationships and I am always alone. Any advice would be really appreciated.