I disagree of Inuyasha is a two-timer
Because he still love the same person,same soul,but in different times(Kag is from future and Kikyo is past)
What's important is nowdays' Inu-Chan doesn't it though?Both of the soul are the same which makes Inu changed
Plus without either of Kag and Kik,it won't be appeared of nowadays' Inu-Chan
so don't called Inu as 2-timer,he's still love the certain person/soul that cares him the most
And also about the immortal talking...I don't think you can compare all of the long scene of Takahashi's manga,because they're all different types.Lum and Ramma's are for humor,Inu's drama and the last one is for life-story(Sorry don't know what it called in English plus I don't know how to type chinese,forgive me^^|||)So it can't be compare of all of them
Anyhow,that's just my opinion.Don't flame me ><;;;