It does happen and you can revert emotionally to that time or incident. My doctor told me I was having flashbacks during sex. Err... Talk about your husband cooling things down fast! We still don't do much but I can now be with him. It takes a long time healing and working towards that. Tell your partner would be my advice and work on it in therapy with him. It helped us a lot and my husband was extremely kind and understanding about it.

I have had a moment where I relived a childhood moment but it was brief and scary. But nothing bad happened. Others here who have reverted can tell you not all flashbacks when you are trying to heal is not always a bad thing or going to something that is horrible. It is weird how the brain gets wired that way. But nothing to fear while certainly not fun. Therapy can help and facing all you know and the emotions during those times.