Recently I graduated a year early(I did it for him and I so we could begin our life together but we had split up so I continued to do it for myself) and him and his current girl friend (younger than I am) broke up. Him and I have continued to be great friends until he started seeing her. So when they called it off I was not surprised when he called me and asked me to come over so he could vent about it. We did not sleep together that night. We stayed up all night talking out our futures and how childish we once were together. I ended up spenders the next three weeks at his house building a relationship with him to the point we started talking about moving in together and having children. A huge step for the both of us. I would clean his house and make his bed and do the things a wife would do while her husband was at work. It became my everyday activity even if I did not stay with him that night. I'd still make time to go to his house and help his roommate clean while he worked. 

But during the 3 weeks that we had been building a relationship I had found out that he was talking to his ex.. 

They got back together 2 weeks ago when I was still staying at his house.. 

I just need advice on what I should do. This man had asked me to start his family and be his wife one day. To drop me for someone still in high school...