And many of us have argued that the Dark Ritual is not tragic. My female Warden talked him into doing the Dark Ritual, which he did because SHE asked him to, and then he became king and they were married. I consider that to be a happily ever after. Much happier than my male Warden was when Morrigan walked out on him for two years and forced him to hunt her down. But this issue has been rehashed and rehashed in this discussion.
My female warden with Allistair as his queen, or the one as his mistress, in the end, were much more happier than my canon male warden too.
My warden didn't even hunt her down, he wanted to do good for his ravaged country. Toward the end of DAO, he desesperately tried to change Morrigan's mind, ( I used all the options that could try to convince her ) to the point that she was upset and became angry, threatening to leave immediately. That's with this furious reaction that I understood it wasn't a joke, it was for real and that the game wouldn't let me have an happy ending " let's be together forever " XD ! She left. She had things to do. I had mixed feelings, as it was intended I suppose. On one hand I felt, this sucks, on the other hand, I felt, well the journey was awesome and the ending make it even more astonishing.
There was no immediate DLC to fix this, and nothing that could tell me it would change one day. I was left in the dark. Months and months happened before Witch hunt. For me it was over in DAO, and well done. So yeah, like I said, I'm not sure the straight males didn't live heartbreak romance with Morrigan, simply because we had this dlc later. Maybe those who have difficulties to understand this or dismiss the point so easily, should be left in the dark and wait one or two years before knowing and having their closure, maybe they'd see more my point of view. 
And I'm still not sure how this DLC could fix anything, while we knew nothing about them in the eluvian, again left in the dark. This Dlc has become meaningful only with DA:I.
Then, but there it it personal, my warden - alone - saw Morrigan two years after, when this surprising DLC appeared.
And he didn't follow her in the Eluvians, he was the king of Ferelden and had things to do too. Two years ago he would have done anything for her, he would have followed her anywhere, he would have kill anyone without asking question, ( actually he did with flemeth LOL ) My warden who fighted like a dog in DAO to prevent her from leaving him two years ago, let her go, while this time it was Morrigan who asked him with emotion to remain at her side.
A last sad gaze, a step back, and my character finally turning his back silently from Morrigan while his face talks for him is the official end of the relationship I imagined. I am totally satisfied with it. 