I disagree with your safe bet then.

I also don't think child predators end up marrying and making children with their victims (or at least is uncommon?). I am very aware of the relationship between religious people and abuses. This has very little in common with it: it is right there in the open, it is a long-lasting relationship, she was not a child (although much younger), we don't have any pattern (as usual comes up in cases of abuse) etc.

Your argument is literally about the age gap, rephrasing it as "middle-aged and minor" doesn't mean much (also at 18 she was not a minor and you don't know when they actually started a relationship, do you?). Also I didn't say anything about what she looked (strawman), I just said that at 18 you are not a child anymore, let alone at 22. You get the right to vote and to do what you want in many countries, in many places at 19-20 people already have kids and are married (especially in rural areas). These are mostly social convention that have to do with how society function and is organized.

Again, I find this depiction of people at 18 as children an unnecessary infantilization of the population.

Also mine are not scare quotes, are a way to signify that I am using that term without really meaning it, which I think is what quotes are sometimes meant to be used for.

The fact is, the "limit" above which the age gap becomes creepy/predatory is arbitrary, it's cultural, it's based on moral stances but it's not in any case objective, and personal situations can anyway vary (I.e. some people at 18 are very mature, other are very immature). Where do you put the limit? Tom Haverford rule (half the age + 2)?