need some opinions

My husband and I have been married for 6 years. He decided one day that he didn't want to be with me anymore and he wanted a divorce. It came out of nowhere. We are currently living in the same house with our 2 year old daughter. It's kind of like nothing has changed except for him going to hang out with his "friends" from work. Which are females and he claims nothing is going on. However while he acts like he couldn't care less if I was here or not I am completely heart broken. I cry all the time. I can't deal. I want my husband back. And he's completely checked out. How do I deal with such pain? How do I make him fall in love with me again? Or am I just waiting my time? How do I move on. Please somebody give me advice.