naughtysensei has a list of one night stand if u want to take a look:
http://www.mangago.zone/home/mangalist/27698/?filter=&page=1
«◈[]◈» Unrequited Love.. But Life must go on...
http://www.mangago.zone/read-manga/usotsuki_na_kimi_no_toriko/
http://www.mangago.zone/read-manga/kiken_na_otonarisan/tr/111624/page/110/
http://www.mangago.zone/read-manga/yuki_no_shita_no_qualia/
http://www.mangago.zone/read-manga/saezuru_tori_wa_habatakanai/
http://www.mangago.zone/read-manga/ano_kado_wo_magatta_tokoro/
http://www.mangago.zone/read-manga/chikan_diary/mr/chikan-diary/3/2/
http://www.mangago.zone/read-manga/35_do_no_ren_ai_netsu/
http://www.mangago.zone/read-manga/koi_wa_koi_o_shiru/
http://www.mangago.zone/read-manga/kare_no_shousou_to_koi_ni_tsuite/
The second paragraph, they didn't fool around.
Any recommended yaoi manga that have a plot like
Uke is trying to move on or forget about his one-sided love,so he is fine with sleeping with anyone just to forget and then he met the Seme.
Thank you in advance (*__*)/