Here's a manga for those of you who don't mind a little boy x boy love! I found this one to be a lot of fun and nice and short. Maybe this will be the perfect manga for your V-day.
Title: Nar Kiss
Mangaka: Nekono Mariko
Status: Completed? (One site that I read on says it is and the other site says it isn't, but I'm pretty sure it is completed). 7 Chapters
Age: 18+ (sex)
Genre: Comedy, Romance, School Life, Yaoi
Read it Here: http://www.mangahere.com/manga/nar_kiss/