Considering he also fucks Korra, but Korra is a virgin in the Love Route, I'm gonna guess no. Unless you mean after you stop possessing him. In which case...maybe. He might continue fucking Bag Girl for a bit before realizing it's his daughter, though. Hmm...I don't know. If we base his personality after how he acts in the Love Route, I would guess maybe...for his daughters at least. The other women he slept with, most likely yes. As Pema mentions in the Love Route, pre-Harmonic Convergence, Tenzin and her had an understanding that he would try to spread his airbending seed as far as possible to increase the number of airbenders throughout the world (and she would be allowed to do the same if she found someone she wanted to sleep with). He might be confused at first as to why the other girls are actively trying to have sex with him, but he'll go along with it after a while because of his mission. And considering how he acts around his children, he wouldn't immediately be willing to have sex with them. I can't remember how supportive or unsupportive Pema was towards MC-Tenzin boning their children. If she was supportive, then she might convince real-Tenzin to continue having sex with their children. But only until they were old enough to have kids. Then she would force Tenzin to wear a condom. If she was unsupportive/unknowing, then she might convince him to not have sex with them and/or talk to the children and tell them to stop trying to have sex with their father.