If you liked the Absolute Boyfriend manga, the Anime-Planet community thinks you'd like:
They both are very alike because the girl happens to order something without really understanding what it really was. Their feelings change and grows. Santa Claus Panic is good for a short sweet story, while Absolute Boyfriend is good for more drama added on.
Two very touching stories about love between a girl and.. well, i'd call them 'strange boys' - because in Absolute Boyfriend main male character isn't even a human, and in Tonari no Shugoshin - he's a person from ancient legends.
But love can do anything. Or almost anything. Mangas are drawn by different mangakas, but they're pretty supplement each other. Very kawaii reading, for sure. I think you'd like them both.
Both manga are based around the 1 girl, 2 guys love triangle deal. and both manga involve a fair amount of seduction on the part of the male leads. The story lines are completely different, but the romantic aspect has a similar 'feel' in my opinion. If you liked one, I would definately recommend you try the other.