Yaoi where the seme is a slut and cheating on uke, dunno but I like see the uke suffering a little...
look up here http://www.mangago.me/tag/cheating%20seme
I read time ago, 3 friends where one of them (c guy) is in love with (a guy) but that got lot of girls so b guy made c guy his boyfriend and they end up happily at the end a guy realize their friends are in a relationship because they were talking about a scar c guy had so b guy said the exactly part in his body were he remembered while touching...
Where the seme or uke is addicted to sex??? Please???
http://www.mangago.me/read-manga/fuuzokugurui_desu_ga_toshishita_danshi_ni_kokuraremashita/
http://www.mangago.me/read-manga/saezuru_tori_wa_habatakanai/
http://www.mangago.me/read-manga/buddy_system/
http://www.mangago.me/read-manga/kedamono_nanbiki/
http://www.mangago.me/read-manga/tabun_sore_ga_love_nanjanakarou_ka/
http://www.mangago.me/read-manga/toyed_aniya_yuiji/
http://www.mangago.me/read-manga/kataomoizumu/
A yaoi manga were siblings fight for a uke, or a cheating seme... I wanna read something cruel.xD
@linz list:
http://www.mangago.me/home/mangalist/4468/
(i recommend you Overdose)
a yaoi where the uke is being played!!! like ''OVERDOSE'', dunno but like to see the uke cry ( ̄∇ ̄")
Maybe try this if you haven't read it. http://www.mangago.me/read-manga/aishuu/
Already read...
Maybe... http://www.mangago.me/read-manga/kawaii_akuma/. This series.
http://www.mangago.me/read-manga/m_nano_baka_nano_hentai_nano/
http://www.mangago.me/read-manga/nani_ka_ii_no_mitsuketa/
http://www.mangago.me/read-manga/joushi_tono_hitoban/
http://www.mangago.me/read-manga/ikezu_kareshi_no_otoshikata/
http://www.mangago.me/read-manga/saiaku_na_rinjin/
http://www.mangago.me/read-manga/houkago_no_love_call/
http://www.mangago.me/read-manga/michi_to_no_souguu/
http://www.mangago.me/read-manga/koi_no_mannaka/
http://www.mangago.me/read-manga/sono_kuchibiru_ni_yoru_no_tsuyu/
http://www.mangago.me/read-manga/kohitsuji_to_ookami/
http://www.mangago.me/read-manga/ochiru_seija_no_seppun/
http://www.mangago.me/read-manga/final_impression/
There's a different range of crying ukes in this list. Maybe some will be what you are looking for... (〜 ̄△ ̄)〜 ヾ(☆▽☆)
http://www.mangago.me/read-manga/yume_no_you_na_hanashi/. Alot of crying uke in this one.