You always knew, didnt you Mother...or did you?

One thing that I love about myself is my honesty, especially with those who matter -
The lies I tell strangers or fairweather friends, make me more colorful and really, do "they" matter?
I was and sorta still am curious as to how Rob has explained the many dramas over the years, including this last bout, to his family or mum.
I have always confided in my mom. Ive broken down in front of her telling her whats gone on, including this latest episode. Although seeing her gay son upset, and possibly feeling a bit uncomfortable, Im her son and she hates to see me in pain, but I confide in her 100% and she gives me 100% support. She knows that Rob has a shady past, that Rob messed around on me, she knows when I lost it on him etc, she is one of my true confidants.
Rob's mum on the other hand, poor thing is under a completely different illusion of her son. For some reason I cant see Rob telling his mom, time and time again over the years, "I messed behind Franco's back, and he kicked me out/we broke up".
I got a "message" from her through another friend the other week, "thank you for what you are doing to my son." - My response, as bitchy as it was, was "You can thank your son for what he has/had done to me", not sure if that message ever went through but its what i sent back. She cant possibly know the truth. Which makes Robs situation, Robs life that much more sad. Who does he confide in? Is it all just in his head? The fact that I couldnt tell the truth to anyone would kill me. That is just my character. I understand that alot of Robs life, outside of his M-F, 9-5, is secretive and shady, it was with me, Im almost positive it is with his family as well. I always tell my mom, Im out with my friend, when Im not. Im sure Rob used my name as an excuse, "Im goin out with Franco", meanwhile he probably found himself at the back of an alley, blowing some seedy, sex line chat queer and then goin back home.
It's sad that he cant even tell his family about his ups and downs, truthfully, well not the downs as no one has caused them but Rob himself. His family, well nobody would have any pity when you cause your own dramas. He was surprised at the fact that my family never contacted him? That I found funny...I can see it now, "Dear Rob, sorry about what happened between you and Franco. You messed around again, its ok, we still love you" - Is that what he expected? He crossed me again and somehow thought my family, would offer to speak to him still or offer a shoulder to cry on, or lend an ear? He is so dillusional, when I heard that comment about them not contacting him and him being surprised, I was left with my jaw wide open. He makes no sense. Why would they, why should they? I didnt see his mother or brothers call me, telling me how sorry they were for their son being what he is, for having done what he had/has done, numerous times, yet he expected to hear from my family?
I didnt and dont expect his family to contact me, nor do I want to hear from them. I just wished and wonder if they knew the truth, which once again, I can bet my life, I cant bet anything and everything that his family has no real clue as to what happened to us. It's probably better off that way for him at least, seeing the reaction to his brothers lifestyle years ago, his family was mortified and traumatised, as was I at the time. This would just be a repeat of that and his mom doesnt need that in her life. Its just sad that, as the lyric goes, "my momma never knew, but I do, I do, my momma never knew."