>>76932246It all started when Wolfman and Perez made him hot and more sexual. He was all hot with Kori and got raped almost twice because he was that hot. Being away from Batman helped because he wasn't seen as his kid sidekick anymore.
Prior to this he was a pretty straight laced normal guy in college, normal girlfriend, etc because it was the 70s and he was still Batman's sidekick. The most sexual he got at that time was him being seduced by some vampire lady that was one of the first villains Batman fought, pic related.
Then Dixon tried making him more conservative but still hot, i.e. women still found hot but he didn't really do anything about it. Then Devin Grayson took the reigns on Titans and his solo and even more women found him attractive, and he was okay with flirting back occasionally.
And now women finding him attractive and him being hot in general are staples for his character.