Hey Regrets! Don't take the blame. Everyone has regrets, and you can't go back as much as we would all like too. Hind sight is 20/20 you know. All you can do is just work on you and enjoy the time you are together. Don't try and figure it out, as you really can't. We try, but we don't really know and they don't really know either.
Just take it one step at a time and relax and enjoy each day as they come. Don't worry about what might happen.