An experienced mother taught a sex lesson to her young stepson

But there is no need to scold me as immoral, morally and even physically fallen, just because I have sex with my stepmother and not even that. She just trains me not to cum for a long time, scolds me dirty and there are very tangible successes. My girlfriend will definitely be happy, but if my dad finds out, he definitely won’t. But we won’t tell him?!