I liked the Kennedy and Willow relationship. Yeah, I know, shoot me.
I don't consider that Willow has a 'type' when it comes to the people she falls in love with, but I do think that she needed someone the complete opposite of Tara in order for her to actually let Tara go.
I do think that Willow moved on slightly too fast, but then again, people grieve in different ways and I'm not going to judge Willow for needing someone to share her life with. But I don't think Kennedy pushed her or was too aggressive in her advances. I don't think Willow would be in a relationship with her if she thought that. Willow is a strong woman, she's independent and she makes up her own mind, she won't be forced to do anything, so if she wasn't attracted to Kennedy and didn't want to be with Kennedy, then she wouldn't be with Kennedy. It's as simple as that.
Let's not forget, this wasn't some rebound fling for Willow, she was with Kennedy for almost three years, longer than she was with either Tara or Oz. And they only broke up because of Willow's insecurities in herself.
I do think, however, that Kennedy loved Willow more than Willow loved Kennedy. I don't think it's necessarily Willow's fault or something she caused. I think she honestly loved Kennedy in the beginning, but I think magic and power mean more to Willow than her relationships and I think she took advantage of Kennedy, especially towards the end.
I wouldn't be opposed to Willow and Kennedy getting back together, I thought Kennedy was good for Willow's confidence, but Willow needs to sort herself out first, because, as she is right now, I don't think Kennedy wants her back.