Explain to me these dreams?

i dream about an ex girlfriend of mine maybe 2-3 times a week..in my dreams she'd never talk to me, but in my dream last night she talked to me. i cried on her shoulder and appoligized for the past and it ended like this, me saying to her im so sorry,itll never happen again, and she replied, no but it will... this dream really boggles my mind so some one please explain this to mee