Cant say this is my OTP. But I have loved this pairing for a long time. I tend to jump from one OTP to another.
I was first introduced to the DC universe through Lego Batman. The videogame. At first I assumed Batman was in a romantic relationship with Batgirl (due to the similar names) until I got to the Catwoman level. I was awestruck. And because Im a canon shipper kind of fangirl, I liked it immediatly.