4 years ago I was in a relationship with a girl but it didn't work out. I haven't seen her for almost a year, I rarely ever talk to her, I have no feelings for her what so ever, she barely even exists to me. So about 2 years ago I started having dreams about her, and each dream gets progressively closer to me having sex with her. I get really close but we never have sex. Each dream is about 4-6months apart and they're all very realistic. In these dreams I can touch, smell, and taste everything, I can even think like I would normally. They're definitely not wet dreams, they're just insanely realistic and they always involve her. I have no attachment to her what so ever so why am I having these dreams?!