Aw by the sound of your posts you seem obsessed by someone and can't let go :/ You make me think of a friend of mine who sometimes calls me in distress late at night asking to see me, and when I get there she cries and goes on and on about this or that guy who she doesn't understand the behaviour and can't stop thinking about. But sometimes, most time there is nothing to understand, or what there is to understand is so simple, there is no use torturing yourself about it. If the person is making you feel miserable, let them go. Out of your head. This is a conscious decision you have to make, to stop being miserable, and this is very difficult to do, to let go of them, but you have to or you'll keep being sad, and you don't want that.
By the way my apologies if this isn't what it's about at all