Remember that time Anders lost his mind, blew up the chantry, and either died at your hands or had to go on the run?
Pepperidge Farms remembers.
And Pepperidge Farm won't keep it to Pepperidge Farm free of charge, so why don't you go out and buy this CE of DAI and maybe all your heartbreak will go away. 
As for bittersweet romance endings well this isn't new territory for Bioware, hell it can be said ALL the ME3 romances ended in heartbreak, Shep dies. Unless you think that destroy ending is Shep surviving, I'm doubtful myself. Anyway if they go this route which seems likely as everybody won't make it out alive I'll have my bucket of ice-cream on the ready, yunno to eat away the hurt... again. 