INFP

http://www.infpblog.com/favorites/why-we-feel-lonely-part-2/
https://www.personalitypage.com/html/INFP_rel.html
http://infpconnection.tumblr.com/post/25444681927/rules-to-dating-an-infp

Additional reading:

1. http://en.wikipedia.org/wiki/Idealist_temperament
2. http://davidmarkley.com/personality/idealist.htm
3. http://www.mypersonality.info/personality-types/nf-temperament/
4. http://calmisc.blogspot.com/2015/03/sf-and-nf-difference-and-enfp.html
5. http://vbala99.blogspot.com/2015/03/intj.html