Hi Seb,
Good question - I'm glad you asked.
I can say it wasn't your fault because there just isn't any "then what", as you put it. It can NEVER be the boy's fault, no matter WHAT happened. Not ever.
Pedophiles are experts at getting boys to trust them, or else just tricking them. The boy may think the abuser is his friend and the sex is a part of the friendship, or he may like the abuser and fear that if he says no he will lose the abuser's affection and attention, or he may just be too scared and confused to know how to get the abuser to stop, or the abuser may have tricked and shamed the boy into thinking that if he tells no one will believe him. And so on. There are lots of other examples I could give.
It's never a boy's job to out-think an adult in a sexual situation. In fact, the abuse will sometimes happen so fast or so cleverly that the boy doesn't even see what's going on until it's too late. I remember when I was first abused I just stood there like a deer in the headlights. I had trusted him because he was a friend of my Dad's, a Scout leader, and a guy I knew from our church. Then suddenly I was all alone with him and, well, it just happened. I was too scared and confused to know what else to do, except exactly what he told me to do. I didn't even know this was sex - but it wasn't my job to know that; it was that guy's job to keep his hands off me.
But if you think it was your fault, you should know that almost all guys do at first and that there are many reasons why they think that. But all the reasons are false. It's something to talk about, and pretty soon you get the idea why you're to blame for absolutely nothing. This isn't survivor propaganda, it's just the truth.
Much love,
Larry