I really love Lovely complex. The story is quite funny and easy to watch. I wasn't bored throught the series. The characters are very energetic, you really see how they grow love for each other and are perfect together. I also like the idea that their affection aren't love at first sight but acctually develop with time, overcoming insecurities and the stigma that they don't "look goot" as a couple.
The thing that I did not like - Risa's development. At the beginning she was so funny and enjoyable.... as she was aware for her real feeling for Atsusi she became desperate following him around....