Why Men Show Interest But When You Open Up They Turn Away. One, it could’ve been that their thing is the one showing interest and not the guy itself and another reason is that because he didn’t really like you. A guy who likes you, when you open up, they will open up too. When a guy likes you because you validate his ego. When you open up, the pleasure that hits his ego gets from chasing you goes away but the chemistry, the connection stays. There’s no internal thing driving it, it’s only external.