Imo charges of aggravated rape leave little room for quibbling about the nature of events. Whatever the initial interactions, the police were satisfied that these cases were to be prosecuted as sex crimes.
Just an interesting aside I wasn’t aware of, while we’re discussing the technical definition of rape.
According to Wiki (quoting a US Govt report on Germany’s human rights record):
‘Consensual sex (in Germany) is legal from the age of 14 in most cases. There is an exception if the older partner is above the age of 18, and is “exploiting a coercive situation” or offering compensation, and the younger partner is under 16. It is also illegal for someone older than 21 to have sex with someone under the age of 16 if the older person “exploits the victim’s lack of capacity for sexual self-determination.”
en.m.wikipedia.org