While attending a seminar on dreams, the speaker suggested that having sex with someone in a dream suggested that there was something that we "wanted" from that person. A physical or personality attribute, perhaps. Sometimes it could be less subtle and simply be the guy next door's lawn tractor.
Dreams are dreams and interpretating them is subjective, at best. And, your honesty by throwing it out there in a community of survivors is certainly refreshing. If not a bit unsettling, I would imagine, to some.
Since you've stated that the dreams have not returned since being on the site and, if our speaker is remotely right, it might be that the expression of what is going on for you has helped. If your interpretation of being a child is that they are able to express what they are feeling openly and honestly, in a healthy environment, that would certainly make sense.
Men, in a general sort of way, tend to be goal oriented, I think. As in, "See it, want it and or do it." A very high percentage of the posts on the site include difficulties with "acting out," and is a valid concern by many. Our histories include being sexualized and our boundaries have been grievously violated.
I would offer that a therapist would most certainly help to sort it out. Together, you can find some level of resolve with what is going on, perhaps find some peace with it.
Thank you for you post, Tim!