My girlfriend and I have been dating for 2 years. I have been struggling with depression for a few years now, and I have been going to therapy for about a year for it. I believe my depression is beginning to take a toll on our sex life. In recent months, I've had a lack of interest in sex and I believe it is due to my depression. Today, she was very irritated with me because I did not feel like being sexual. I've refused sex many times throughout the last few months and she has clearly expressed to me that it is making her irritated and angry with me. I do not want to lose her over something like this.