i was gonna say maybe "Love is an Illusion" but i dont think its that one. maybe try looking here? http://www.mangago.me/home/mangalist/124760/ if youve read it before, click the "already read" button
is it this?? im not sure tho
http://www.mangago.me/read-manga/kekkon_shite_kudasai/
Thank you ╮( ̄▽ ̄)╭ it is called Hydrangea Cage for anyone who wants to read it.
http://www.mangago.me/read-manga/hydrangea_cage/uu/d_v-1-chapter-1/pg-3/
Can anyone tell me the name of the omega verse Yaoi that has an arrogant seme who takes a young uke just for breeding but the young uke leaves when he finds out he is pregnant to have the child on his own. Then, the seme meets him again and they become a family.