Hi, I am struggling with whom I should ask for the letter of recommendation. I worked with my girlfriend who was a staff member (she already earned his PhD) at that time in the same lab for two years. We worked very professionally and she was mentoring me during my stay in the lab. We even have a couple of papers published together. She knows my potential very well in my personal and professional life. She is basically the perfect person to write me a letter of recommendation and if we were not together, I wouldn't think twice to ask her for a support letter. I feel that it would be a bit unfair for other applicants or might unethical to submit the recommendation letter from your significant other. My situation with my committee members is that I did not have much contact with them due to the nature of the project. My adviser was very opinionated about my Master project and my other committee members did not have much influence or need to advise me. I talked to one of them only twice during video chat and so he is not definitely a person who can write a strong letter for me. I can get two letters of recommendation from my adviser and another committee member who knows me well enough. I am struggling with the third. Can you guys give your opinions if I should apply using a letter from her? Btw, I am applying to PhD program and will include top program. My girlfriend current position also has the perfect credentials to write LORS.