I don't know if I actually believe this, but I've heard reports that cause me to assign a non-neglible probability on the chance that sexual relations with between children and adults aren't necessarily as harmful as they may seem. For instance, see the Rind et al. report:

"Child Sexual Abuse does not cause intense harm on a pervasive basis regardless of gender." Simplified, Rind et al. (1998) found that 3 out of every 100 individuals in a CSA population had clinically significant problems (compared to 2 out of every 100 in a general population).

Rind et al. contended that the degree of psychological damage was based on whether the child describes the encounter as consensual or not.

Similarly, I've heard second-hand accounts about people who report that they actually had loving relationships with pedophiles as kids. That didn't traumatize them, but the follow-up "psychological care", where the psychiatrists automatically assumed that the experience must have been horrible, did.

It would seem reasonable, on the face of it. There's no automatic reason for why we should assume sexual relations with children must automatically be harmful and unpleasant to the kids, if not for the cached thought of all sexual relations being abuse. And in the current political climate, just about nobody will have the courage to voice such an opinion in public, so studies such as these should carry extra weight.