How he can be like Tej. Tej is pakka businessman and think about his benefit before others where Om is kaccha businessman think about other before himself.
He married Gauri to save her life without thinking abt her at that moment what if gauri was actually like svetlana and came to his house with villegers to claim her rights. He didnt thought about his benefit in this.
He was going to marry svetlana to save his parents wedding.
He ran to save his friend chulbul risking his own life in process who was he just a house help whom Om took as best friend because he did so much for him. Tej even didnt tried to save svetlana whom he claimed to love.
He paid money for Gauri mom treatment before striking a deal with Gauri even after knowing she lied to him. He didnt think what if she had refused to help as he had already paid that money for treatment. I am sure he would still paid for gauri mom treatment if she hadnt helped him as he couldnt see any innocent suffer whereas Tej was ready to kill him for svetlana.
Forget Gauri he even let svetlana stay when she blackmailed him to expose Tej the person who was letting him die. This shows he still care for Tej
Just because he was rude witb Gauri he became like Tej who has done nothing good for others till now what a logic.