Doushitemo Furetakunai
Complete | yoneda kou | 2008 released
Office romance between a gay guy who's been hurt before and his "straight" colleague. Lot's of unrequited, but wait not unrequited after all feelings. It's beautiful, romantic, also funny at times. The author describes it as shoujo-ey, and it is, but it's a romance between adults, with all the limitations that entails. Give it a read, you will not regret it!
Yatamomo