I like to have Anomen in my party. I helped him pass his test for the Order of the Radiant Heart. I like the less arrogant Anoman with the additional points in Wisdom.
Later on when he confronts the murder of his sister it seems I am presented with two choices. Telling him that I love him results in him staying in my party. Otherwise he will just leave me. I did not even find that there is a romance going on or whatever and as I dislike romances in general in wondered whether I am able to keep him as a companion somehow but while also helping him passing his test. I always kept the conversations between us just friendly.
PS: It is really a bummer because I had to let Keldorn return to his family as well and losing two of my favorite companions with only the best intentions kinda sucks.
PPS: I just saw that even though Anomen left in SoA, I could bring him back in ToB. He kept his Wisdom, but (I am uncertain of that) went back to his initial responses, always acting annoyed when I order him to do something. Meh!