help me..

Sono kuchibiru ni yoru tsuyu

Not sure if this would be what you want but

http://www.mangago.zone/read-manga/kateikyoushi_hitman_reborn_dj_the_hitman_who_loved_me/
http://www.mangago.zone/read-manga/kateikyoushi_hitman_reborn_dj_roman_holiday/
http://www.mangago.zone/read-manga/kateikyo_hitman_reborn_dj_the_nightmare_before_christmas/

They made my heart ache anyway :P

Lots of heart ache in this one, but it's the uke that's the ultimate jerk:

http://www.mangago.zone/read-manga/complex_manda_ringo/

Are we talking physical pain, mental pain, or both? If you're looking more physical I'd recommend Under Grand Hotel and Rakuen No Ori.

For mental pain/heartaches/tears, Yondaime Ooyamato Tatsuyuki, Itou-san (Kuraka Sui), Neon Sign Amber, Owaranai Fukou Ni Tsuite No Hanashi, and Koi No Mannaka are great.

A good one for both is To Take An Enemy's Heart. If you're feeling real frisky, Caste Heaven will blow your mind. In fact, check out the rest of Ogawa Chise's works too if you really like angst (and a large dose of effed up).

http://www.mangago.zone/read-manga/ano_hi_no_kimi_wo_dakishimeta_nara/ maybe?
http://www.mangago.zone/read-manga/baka_de_guzu_wa_daikirai/
http://www.mangago.zone/read-manga/yume_musubi_koi_musubi/. This one so good. Seme constantly rejecting the Uke, but Uke never gives up.
http://www.mangago.zone/read-manga/ano_koi_no_tsuzuki/
http://www.mangago.zone/read-manga/ashita_mo_tanin/
http://www.mangago.zone/read-manga/i_cant_even_breeth_without_you/
http://www.mangago.zone/read-manga/yasashii_kankei/
http://www.mangago.zone/read-manga/hatsukoi_no_atosaki/
http://www.mangago.zone/read-manga/boku_dake_no_kimi_kimi_dake_no_boku/

Some may be what you want, but some may not be. Hope you find something you like.

http://www.mangago.zone/read-manga/yachin_hanbun_no_ibasho_desu/mf/v01/c006/
http://www.mangago.zone/read-manga/yuki_iro_machiboke/
http://www.mangago.zone/read-manga/croquis/
http://www.mangago.zone/read-manga/yume_yume_shinjuu/
http://www.mangago.zone/read-manga/birthday/
http://www.mangago.zone/read-manga/500_nen_no_itonami/
http://www.mangago.zone/read-manga/pure_dakkang/

http://www.mangago.zone/read-manga/sasayaku_no_wa_sono_yubi/