The answer is to drop any effort on your part to close that space. Resist the temptation to ask him what's wrong or to step up your efforts in order to get a response from him. Don't call him or email him or drop by his place. Let him make the choice to come to you. When he does, it also makes you feel better. It makes you feel desired by him. 

Step 3: Connect with His Heart Using Feeling Messages 

When a man does withdraw, it creates all sorts of feelings inside us. We feel neglected, uncertain, and angry. And when he comes back, it's easy to feel resentful. We want him to know that we felt hurt. We don't want him to think it's just okay for him to pull away. 

But there is power in your words, and the words you choose can deepen the connection you share so that he is more mindful of your feelings when he does need his space. The trick is to talk to him in a way that expresses your feelings without blaming him. 

So, instead of saying, "Why haven't you called?!" try, "I feel so happy to hear from you!" Show him that being with you is a fun, positive experience. When he sees that you didn't let your emotions overrun you and senses that you didn't place such a high importance on his actions, he'll be motivated to stay close and connected with you. He'll recognize that he's with a woman who respects his needs while taking care of her own feelings. And he'll appreciate that you didn't blame or criticize him.