I think that sometimes you do not see the warning signs until it is already over. Blinded.. maybe. Don't want to see them.. maybe... Stupid.. perhaps... should have been over long time ago.. who knows..
We are all human and of course we grieve any relationship, just some to different extremes. Like when I had to put my dog to sleep, three years ago now.. I still grieve over that at times. Past gfs.. not as long as that lol.
I think this community definitely comes together when someone is in need and the support is definitely helpful when getting through those grieving stages.