Is it Normal that someone ex who's dead be a problem?

Anonymous
My girlfriend is in relationship with me since last 2 years before that she was almost getting married with a guy who she was with for two years, I'm there for her but she can never forget him. In every conversation when he's mentioned now feels exhausting to me it usually occured to me that she will get over after some months or years but it doesn't look like that now. I feel like I am the reason that she isn't able to move on. How can I make her move on with her life, also she's pretty much stuck in her past life that I can't understand how she can move on have a better life for herself.
Is it Normal that someone ex who's dead be a problem?
2 Opinion