One of the couples from chapter 6 of this manga- Kouun no rihatsushi!
Yes that's it! I've been looking for it forever, thank you!!
This one is a yaoi with multiple couples in a highschool. This one has like 3 eps on this one couple. Pretty sure the uke has pink hair, and the seme has darker colored hair. The uke is a huge slut and the seme is super jealous, so when the uke wants to sleep with the seme, he refuses. Uke gets really seductive, but it does not work. Seme makes a deal with the uke that he will sleep with him if he can keep from having sex for a period of time (i think its a week.) And after they sleep together, he says he has to keep not having sex with anyone else if he wants them to keep sleeping together. Please let me know if you know what im talking about, thanks!
Yaoi where uke is obsessed with sex. He's walking through a park at night almost gonna pass out cause he needs to have sex. Finds seme office worker and drags him to the restroom. Seme is scared and runs away after uke forces him to have sex. Uke loved the sex so searches for seme.