Does anyone recomend any good shounen ai or yaoi with unrequited love? : D or something thats one sided. I"m a sucker for good plotlines and unhealthy doses of angst.

Don't most yaoi series start with unrequited love? lol. Or are you looking for a relationship that never actually manifests?

In any case, the two series that pop into my mind are:
Hydra by Miyamoto Kano
Mimurake no Musuko by Meiji Kanako

Actually, Miyamoto Kano deals with unrequited love and angst a lot. Her stories are good, so they're always worth checking out.

Try masara minase works...lots of them are angsty.

Maybe somewhat relevant? http://www.mangaupdates.com/showtopic.php?tid=3163

But I think this series (Shitsuren Mania) is more of what you're looking for?

[url=http:////www.mangaupdates.com/showtopic.php?tid=42718][img]http://i366.photobucket.com/albums/oo105/CatzCradle64/Avis-Sigs/FunghiPower_zps2a00ba56copy_zpsfc03990e.png[/img][/url]

Tokyo Babylon is killer. Will also add Illumination, which is also pretty angsty.

I recently read Tadayoedo Shizumazu, Saredo Naki mo Sezu and it made me think of this topic. Definately a great unrequited love story.

I just can remember these ones, although in most of the mangas the couples end up together (it's yaoi what can i do?) XD

Kimi no Kao ni Sasu Kage
Playboy Amour
Empty Heart
Boku wa Kimi no Tori ni Naritai
Escape (KYUUGOU)
Silence
Lover's Position
Kyuuso Ha Cheese no Yume Omiru (prequel)
Sojou no Koi wa Nido Haneru (sequel)

Hope it helps (:

"I exist, that is all, and I find it nauseating" -Sartre

Interval