Invite him in. Most guys would communicate if they felt emotionally "safe". Just like women who find it easier to talk about their feelings when they don't feel threatened. Guys are the same way. Show your guy that no matter, he can come to you and be open and honest with you without feeling judged. Don't speak. When your guy is telling you something, even if you don't agree with it and even if it makes you angry, don't interrupt him.

Let him get all of his feelings out before you respond and ask him to give you the same courtesy. This opens a free flow of communication without judgment or angst. Sometimes, in a conversation, you'll notice it heading south. Either you'll say something out of line or your man will. When this happens, instead of getting angry and lashing out, call a time-out. Take a breather from the conversation until you feel like you're ready to start again.

This shows your man that when he communicates with you, there is mutual respect and love there. You would rather take a time-out than hurl insults and foster bad feelings. Men, like women, are often very guarded with their feelings. Men don't want to look weak, so if your guy comes to you venting about his bad day, a fear he has about something or something else that would be perceived as a vulnerability, touch his hand, rub his back as he talks to you so that he'll know you're sympathetic

Soon, he'll know that when he has an issue or is feeling vulnerable, he can come to you and trust you with his feelings. Get engaged. Give your guy feedback about what he's saying when he talks to you. Phrases like, "I know how you feel", "I'm sorry this is happening to you," will make him feel comfortable and let him know that he has nothing to fear by confiding in you.