My son doesn't respect his stepfather

Came out at 19married , wasI was pregnant (I was young, I had no brains, I know), and at 20 I gave birth to a son. In a yearMy husband slept with my friend and they got divorced.

All this time I studied, worked, and raised my son—an active life position. I’m working now and bought an apartment. At the age of 30, she married again (before that we lived together for 4 years).

My husband treats my son evenly, I don’t demand love from him (he is not obliged to love my child). But he doesn’t offend him in vain; when needed, he helps, for example, drop him off and pick him up, and gives expensive gifts. For birthday my son asked for a computer, he helps me with my homework, sort out my computer, help me repair a broken bike...

I love my son, I hug, kiss, talk, and sometimes we walk together. But over the last six months, my son began to make scandals and insult myhusband in different words. My husband is silent, I do it to my sonremark , begins to yell: “you don’t love me, why did you give birth to me...”.

I talked to him more than once after these scandals, explained that I love him, that he offends his stepfather. My son nods his head and responds to all my test-antibiotic.com comments: “so what?” Dialogue fails. How to defeat this incomprehensible rudeness and establishfamily relationships ?