Is grooming the right word here? The guy is 42, grooming to me has a pedophilic connotation.
This is how groomed is used, yes. The sexually overt connotation is a very recent thing.
The word has a many meanings - https://en.wiktionary.org/wiki/groom
Squinting at a [Compact] 1971 Oxford English Dictionary - the pedophilic meaning postdates that edition.
You should spend less time on 4chan.