Responses
Looks like he had feelings for River (and I think he still has), but they werent strong enough to persuade Khaol to leave Kaveri alone. And Khaol said clearly that he doesn't regret anything, he would do it again if needed, even with Kaveri half alive, half dead, and killing River all over... But he feels pain for letting River down. So he thinks it's better for River and Heil to be happy together
I haven't read the new season yet but I have to know : Did khaol never really loved river and was really just playing him so that he can save kaveri??? What are his feelings towards him? Did he regret betraying him???