Sure, we all grow up with simple dreams of having a family and having a companion whom you love and grow old with. I was taught about love and marriage and a happy life and a good old American values, but, there were no chapters on breakups and heartbreaks. I wish they were because that is also very much a part of our lives.
when you love someone so deep and it is rejected something inside you dies. All you wanted was to love and be loved in return. Such a simple thing turned out to be so hard. I can understand why you say that you will take him back if he came back to you. I would probably do the same thing if I were you. It goes against all logic but somehow I think you know that it will give you peace .............atleast for a while. however I don't think it will be the best for you in the long run.
Hope is the most powerful of all human strengths which keeps us going at such times. Please try and meet someone who you will believe will love you and care for you always. He may not be the great love of your life but he my be the next best thing for you.