I was having a romance with Anomen and suddently he left because he wanted to kill Saerk, the killer of his father. I went to the house and talked him in to not killing the guy. I had to say that I loved him and so forth. After that he turned in to his old anoying self and I did not hear anything more to the romance. Did the romance end after the Saerk quest or what?? I was just beginning to find it amuesing.

Honestly I have no idea whatsoever!
I just had to reply since I could`t help but notice
that you are from Denmark! "right on"
so am I (obviously)
Anyway sorry to be of such poor assistance

Ah, another dane, I believe that some of the romances appear to end quite abruptly, but actually continue in the expansion for BG2, possibly, Anomen's romance is one of these.

I think that sounds about right. I never actually finished the Anomen romance, I dumped that game and never started again. I did get to the point that you're at though and I can't remember anyhting else happening between then and the time I dropped the game (after asylum) apart from a dialogue relating to an event (so not strictly speaking romance).
Hope that helps