I think you'd enjoy Marmalade Boy. Here's an image from it. The anime and manga are different, but I really think you should try it out. 76 episodes. You should view the first one and see if you like it. The anime and manga are both good. The couples are devoted to each othe. It has romance and comedy as well. When the couple gets together, the series picks up and becomes even better. There are lots of steady couples. The couples don't betray each other.