Help

It’s this manwha about 2 high school boys they are childhood friends, one with glasses, black/blue hair likes the other friend who was very famous and is scared of being abandoned. They are in all boys school and the famous one gets proposed by an other guy a while later his friend asks to try dating as practice and write a cont act with 3 rules but slowly they fall for each other.
It has like 2, 3 s and it completed i think