Actually, this is a tricky question because 恋 is not something can be defined clearly. がしたい means "want to do something," so it would be "恋 이 하고 싶다" Then, what is 恋 in Korean? 恋 (戀 in traditional Chinese) means 그리움(miss), 사모함 (admire), etc. However, the word "사랑" implies a lot of meanings in Korean. 사랑 means : 1. Status of feeling attracted by someone 2. Feeling of consideration to someone close 3. Attitude to understand and help others 4. Take someone/something very precious Etc.... So, you can just use "사랑" to translate "恋" into Korean. We would translate "恋がしたい " into "사랑 하고 싶다" By the way, I know a japanese drama called "恋がしたい, 恋がしたい, 恋がしたい ." It's pretty good drama and I would like to recommend you if you have not watched it. Hope it helps :)