What are some great romance manga?

I am looking for attractive completed romance manga to fill my summer with. I liked "Moe Kare" so much. I also read "midnight secretary", "private prince", "hana kimi", "love monster"and "skip beat". If anyone could help me find similar manga, I would be really thankful. If it's mature it doesn't matter. Please choose complete ones but if it's good and it's not completed I'm ok with it. Thank you x]]