playboy dude thought the other guy was interested in him lol
http://www.mangago.zone/read-manga/kocchi_muite_ai/
he used to sleep around and competed who could seduce someone fastest but stopped the moment he fell for the uke and that's been going on for several yrs
http://www.mangago.zone/read-manga/renai_nante_yurushimasen/
if you're ok with him sleeping with others but then later regrets it
http://www.mangago.zone/read-manga/hina_wa_mitsuiro_no_koi_ni_torawareru/
both are playboys lol sorta
http://www.mangago.zone/read-manga/hang_out_crisis/
Sure, I can try finding some more but have you read the second story's sequel? :D http://www.mangago.zone/read-manga/netsuai_nante_ariemasen/
gets with the ladies to receive information, morally ambiguous seme
http://www.mangago.zone/read-manga/ameiro_paradox/
seme's not my type but you might like the teasing playboy kinda dude
http://www.mangago.zone/read-manga/tadareta_koi_ni_wa_itashimasen/
not exactly a playboy, he used to date a lot of girls but found out he's been
unconsciously in love with his childhood friend for years now
http://www.mangago.zone/read-manga/nozomu_bekumonai/
his way of bullying reminds me of a third grader with a crush, dated a lot of girls
http://www.mangago.zone/read-manga/sick/
richass dude who's got no shortage on women, fell for a jellyfish LOL
http://www.mangago.zone/read-manga/tsukiyo_no_kurage_wa_koi_ni_naku/
gay contract killer has to take care of a debt, moves to a penthouse owned by a rich dude who's a bit of a party animal. quite a lot of smut. ongoing.
http://www.mangago.zone/read-manga/penthouse_xxx/
averagely popular with girls but never serious with them, this guy in the student council caught his eye because the guy has a huge unrequited crush on someone who's taken
http://www.mangago.zone/read-manga/kirai_ni_wa_narenai/
only RUMOURED to be a playboy. surprisingly wholesome. it's about two guys in their high school clumsily discovering their sexuality.
http://www.mangago.zone/read-manga/golden_sparkle/
a bi seme used to date other people's lovers, despite that past, the story is sweet and there's an underlying theme about family
http://www.mangago.zone/read-manga/hinadori_wa_shiokaze_ni_madoromu/
never read it but apparently it's like Hina wa Mitsuiro no Koi ni Torawareru?
http://www.mangago.zone/read-manga/almond_o_nanatsubu/
BONUS
uke's the one getting played. seme has been cheating on the uke for a long time now. regrets it way too late and the uke doesn't want anything to do with the seme anymore.
http://www.mangago.zone/read-manga/10_years_where_i_loved_you_the_most/
he's not a bad guy or a playboy but he owns a multimillion gay porn industry and he exudes an air of dominance and mystery, and there's another guy related to the chinese mafia situated in new york uwu
http://www.mangago.zone/read-manga/walk_on_water/
Any yaoi recommendation about the seme really a bad guy/playboy who finally fall in love and faithfull to their lover?