Im looking for a yaoi manga ... I cant remember the characters name... but the story was l...

Im looking for a yaoi manga ... I cant remember the characters name... but the story was like......
a highschool student deeply in love with his classmate/friend but he has a girlfriend..... so that boy was broken hearted and lost his virginity to an unknown adult person ...that was one night stand... few days later or the next day .. well somehow he became sick and ended up in a hospital ... he had a cold and fever he also felt weak... so he was afraid that he might have aids ! well he ask the nurse to take a blood test.. well the doctor there was surprised to see a highschool boy is asking for aids test so he went to meet the patient ... coincidentally that doctor was the one he had sex with!!!
later his friend came to visit him...
well story goes on and that boy a doctor fall in love with each other!