what is with the missing chapters? does it effect how it is in order, like just skip a large part of stuff?
Just read it here: http://www.mangago.me/read-manga/sayonara_itoshi_no_my_friend/ . There is at first the story of his brother and then comes his story. But they are just lightly connected so it doesn't matter what you read first :)
It seems like when you go to genre>update Date for the list it doesn't show all that comes out? I fount this - http://www.mangago.me/read-manga/maigo_no_kare_to_kuma_no_onegai/ - as new but its not on the update list, is it just me or should i find it somewhere else?
Yeah they created a "new manga" page that shows all the recently added manga:
http://www.mangago.me/list/new/all/1/
The "update date" doesn't show the new ones only the mangas that have a new chapter out (they made that too complicated, they should have left it the way they had it tbh).
I already love both of them. Not only for the art. I am 90% positive the only condition is that his cat likes the other person. I know this because that's how I feel. And the last words being that the cat liked the other really made it seem that way.