1-1 Relationships/Devotion Animes

[KholdStare]

I also second Hanbun no Tsuki ga Noboru Sora, and also Allison & Lillia might fit.

[Vexx]

many good recommendations (like REC, Lov*Com, Hanbun no Tsuki ga Noboru Sora, etc)

Some offbeat choices:
Tsukuyomi Moon Phase -- vampires, comedy, tragedy, but at the core its a single couple's romance from start to finish.
Kamichu! -- there's a romance at the core of this one from first to last. All the other interesting stuff has it hard to see at times but the last episode cinches it.

[Verist]

Koi Kaze, very good.. incest, but done tactfully.

[TinyRedLeaf]

Originally Posted by foreverdissevered

Urm... Im looking for animes containing contents of love or perhaps sorrowful love. The most important part is the main character can not love or have special feelings for 2 girls at the same( or so called harem animes..). And no 2 girls chasing 1 guy crazily at the same -_-

Does it have to be anime series? If you're open to movies/OAVs, I'd strongly recommend Byousoku 5 Centimeter.

Tohno Takaki and Shinohara Akari were close childhood friends who gradually grew further and further apart as time moved on. They became separated because of their families, yet continued to stay in touch by writing letters to each other. Years pass by and the rift between them grew ever wider. Takaki clung on to the times they had shared together, but as life continued to unfold, he began to wonder if he could meet Akari again.