About 3 years ago i was sexually harassed by a loved one. i still have nightmares about him every few weeks-months. will they ever go away?

Probably but: You had traumatic situations & may have symptoms of PTSD--I'd see a professional who works with PTSD

Get help!: What a horrible experience for you! As with any extremely bad/traumatic experiences (or good experiences for that matter), we are affected. In this case the effects are mostly negative and can be long-lasting. However, there is great treatment for post-traumatic stress disorder. Plus there are other issues since it involved a loved one. Please talk to a qualified therapist, treatment does help