Saiaku no Jinsei
SKIP THE FIRST STORY (aka chapter 1). Seriously the main love interest is terrible and puts his fetish before the actual person he's dating. He also can't read the mood to save his life (or his relationship). The second relationship is really sweet though! (if a little bit stalkerish at times) The main guy finds a dude that is constantly doing the right thing at the wrong time in the wrong place, so he's considered a troublemaker even though he's genuinely just trying to help. Main guy decides that he wants to marry the heroic tsundere in highschool, but looses track of him when the other guy gets expelled over a misunderstanding. Years later, he finds the guy again, and takes him home and does all but tackle him yelling "Mine!". It's great.
Idol-kun wa Koi wo Shiranai
The main character is an idiot, but he's a //cute// idiot, and that's what matters.
Wotakoi: Love is Hard for Otaku
Super cute! and the translators did a great job translating the jokes and even explain any references made during the story on the last page of each chapter (with pictures and everything)! I highly recommend this if you want something fun but not too heavy.
Nibiiro Musica