I’m sorry are you asking for data to prove that non-consensual sex with a minor boy is damaging? How about this...it’s child molestation BY LAW! Is that science too hard for you?
The damage is similar - And dare I say, the same as the damage brought onto sex partners below the age of -> 25 <- . The damage is the exploitation of someone (anyone) who is not of sound mind to make crucial decisions, such as exposure to VD, Pregnancy, or other psycho-socio outcomes of the behavior.
In other words, it is (in my opinion) criminal to engage in sexual activity with ANYONE who is too young to make sound decisions - In my observation, those below the age of 25.
Harm ? Yeah.
Would this be the same code of laws that allows murdering the unborn? Things are seldom justified as right or wrong just because some jackass in D.C. wrote it.
If you will read my posted question, I did not inquire as to the legal issue, I asked about hard data.
Just in case this escaped your notice, many laws do not reflect reality, and all too many contradict reality.
Are you aware you are assuming I should share your conflating law with science?