If a marriage certificate was signed but never returned am I married in Colorado?

Okay, so my son's father and I moved in together shortly after his birth on 3/12/2010. We talked about seeing if we could make a go at a relationship from a brief summer romance last summer that resulted in my son. We pretty much had no contact from the time the pregnancy was confirmed until 32 weeks when he started coming around again. He signed the birth certificate. We both obtained a marriage license on 5/3/10 and had scheduled to go to the courthouse on 5/6/10 to get married. At his suggestion, he wanted to self solemnize the marriage and didn't want to go through the whole judge thing so we canceled the appointment. So he said let's sign it and he would drop it in the mail. I signed and then went to go tend to the baby. He picks it up and takes it and says its all ready to go and that he was going to drop it in the mail. I have asked him several times did he mail it and he says yes. On the 6th. Here it is 13 days later and the recorders office still hasn't received the license back. I helped him get a cheap car, insurance for that car, and spent countless other monies on what I thought was going to be a long term thing. We started arguing a lot after that date and on 5/17 he moved out stating that he didn't want to stay married to me. The "so-called" marriage was consummated once on 5/7 but my question is, if he never signed it and it never gets filed am I married? I spoke to the clerks office and she said that in Colorado, since the state recognizes self solemizing, if the certificate was signed a ceremony took place. But since I didn't see him sign it does that count? He was using my address when he moved in. I have several text messages from him stating that we are married. He has allowed my family to believe we are married yet I'm pretty sure he hasn't told anyone in his circle. When I ask him does he want to file for a divorce or annulment he stated he doesn't have the money right now and neither do I. So I'm just wondering what do I do other than go after him for child support? Am I Married??????