http://www.mangago.me/read-manga/joukakei_kareshi/
second couple is what you are looking for (i think)
hmmm i was just rereading this and it fits your description. even other people and pissed with the asshole seme http://www.mangago.me/read-manga/shiranai_kao/ you might also want to read over my collection of assholes here http://www.mangago.me/home/mangalist/71183/ and just pick out the ones i marked seme
I have a list with every omegaverse here ^^ http://www.mangago.me/home/mangalist/164842/?filter=do&page=1
Now this is not omegaverse but it definitely fits http://www.mangago.me/read-manga/yoru_to_asa_no_uta/
http://www.mangago.me/home/people/185037/list/ maybe in here you will find something that you might like ヾ(☆▽☆)
helo guys, i want any yaoi that the seme keep hurting the uke's feeling, but the uke still love him no matter wht and i want some yaoi about alpha and omega .. something like that tq