According to Oksusu, it has 44 eps. http://www.oksusu.com/search/result?q=%EB%82%98%EB%8A%94%20%EA%B8%B8%EC%97%90%EC%84%9C%20%EC%97%B0%EC%98%88%EC%9D%B8%EC%9D%84%20%EC%A3%BC%EC%9B%A0%EB%8B%A4
It's the best noona romance so far for me. As a person who doesn't much like this old woman Yong man theme the only factor that pulled into the drama was Lee Jong suk. Bt after watching I am really loving it. Only feels that I wanted more scenes of ji seo Joon and song hae rin...
According to Oksusu, it has 44 eps. http://www.oksusu.com/search/result?q=%EB%82%98%EB%8A%94%20%EA%B8%B8%EC%97%90%EC%84%9C%20%EC%97%B0%EC%98%88%EC%9D%B8%EC%9D%84%20%EC%A3%BC%EC%9B%A0%EB%8B%A4
If anyone is interested the subs are now available in ch3's official youtube channel: https://www.youtube.com/playlist?list=PL0VVVtBqsoupWqQCGXUzuQNlm7bWe7IGr