I almost sold my house

Well this past week or so we got great news!! The house that needs to sell in order for ours to sell, got an offer on it. So they started the paperwork and the whole process. The projected closing date for our house was Feb.14th. The whole paperwork process was started and was about 2 weeks in and the buyers bailed out. I was sick to my stomach. That was horrible news. After 6 months of being on the market we thought our house had finally sold. Now we are back to the beginning. :(