[m][/spoiler] I had read story years ago, maybe back in 2010. It's a yaoi manga with school life genre. I think the seme and the uke become a couple in high school. The seme was taller than the uke and they had an intimate relationship, which is to say they were sleeping together. Now, they are college freshmen and the uke appears all manly and taller than the seme.
The uke may have bee nervous or oblivious to college girls looking at him because he was that hunky. Yet he was still somewhat cute and innocent looking at the same time.
Scenes in the story places the seme and uke in their bedroom, and the uke is upset that he has to still bottom as he thinks himself too big, and wants to switch places with the seme. They're arguments were mostly that the uke did not want to still be a virgin. The seme had at one point told the uke to go find a girlfriend and loose his V card with the girl.
I don't remember much after that. Only that the seme had a last minute change of heart and was afraid that the uke would leave him for a girl in college. Back in their bedroom, the seme had made the switch for the first time and allowed the uke to top him and loose his virginity with him. I appreciate any help I can get in finding this manga.

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