I have a great relationship with my girlfriend for 1.5 year now. I am her 3rd real boyfriend. We are 23 and 21. I proposed her to marry me 1 week ago and she said "a million times yes". In our relationship we decided to tell eachother everything and keep it honest. We also tell our strange dreams.

Over the last months she has dreamed multiple times about her first and second boyfriend. A summary of what happened in the dreams:

-She was hugging her first boyfriend (maybe kissing) but she felt so guilty that she would loose me by doing this, so she wanted to escape.
-We were going to get married, but her first boyfriend cancelled the wedding by sending letters to her parents. She was angry and sad because at the wedding part she was happy.
-She was hugging and kissing me, but her 2nd boyfriend was in the same room watching us. According to her story, he was still convicend they (gf and ex) had a relationship. She was hugging me more strongly to make him realize it is over.
-Last night, she dreamed again that me, her and 2nd boyfriend were in the same room and he started to talk again like "why did you leave me, we could have been so happy, etc" and she told him to get out.
After he left me and gf had a fight.

***every "-" is a new dream***

So there you have it. In all dreams she seems to take my side and her ex-boyfriends still want her.
But why she still keeps dreaming about them? She has'nt seen them in 4 and 2 years or something. What is triggering this?

I asked her a couple of times if she still had feelings for them or anything but that isn't the case. She has said before that she has never been more happy than now with me, and that I am her "best boyfriend".

Still I am irritated by all these dreams about them...

Does anybody have an idea?