Judging from buying a house, maybe your previous relationship was ok, and it lasted for a long time, and it has reached the point of talking about marriage.
From my own dream experience, dreams can be divided into day and night. Dreams during the day are mostly the same as reality, while dreams at night are mostly contrary to reality. If this dream was made at night, then I dreamed of buying a house. Although bumpy, but finally came together, indicating that you will break up. There is nothing to think about. Let's be brave. And the latter's dream is similar. According to the latter dream, it is possible that your boyfriend has no feelings for you.
All the above are my own guesses, for entertainment only, hehe.