Re Lil I got on the net and got books on the subject of moms molesting boys-- and there's not a lot out there on that I don't think guys want to talk about if it did happen, especially it the mother was the main care-giver.
One, he has to dis his mother, and two, girls are encourager to talk as help, guys are expected to suck it up if it wasn't a constant happening.
I think mom's as the primary care-taker can barge in on girls and boys but dads better not do it to girls.
Its a gender inequality if you want to put it that way. Just look at what happened to female teachers that had a R with a underage male student. Some people say the guy got lucky.
Where a girl might feel violated, It's my opinion the boys feelings were more along the lines of embarrassment.
I don't know what age a mother coming into a shower would make a boy feel abused but, at 9 or 10 yes that is way too old for a mother to be interested in a son's gadget.
One of my mother's friends wondered about her son's gadget. She hadn't seen it for several years and wondered if he developed, something similar to a daughters breast development. I think she wanted to know if the son was developing along some age appropriate lines.
Was your bf's mother interested as a mother, hoping the son was normal, or was it a sexual interest?
I can see how some of your bf's mothers actions, effect his life today.