Just when you thought Selena Gomez couldn't top herself after last week's painfully pathetic song "The Heart Wants What It Wants," she managed to do so with her new track "Do It."

It doesn't feature a recording of her crying at the beginning about Justin Bieber dumping her. Instead, in this tune, she sings about getting naked with him. I mean, it's about clearly about having amazing sex with someone, and she hasn't been seen with that many fellows, so by default this has to be about the Biebs, right?

SG sings, "I'll show you want I like boy boy boy / If you show me what you like boy boy boy / If I had choice / If I had my way / Boy you know we'd do it every single day / Wish I didn't feel so hypnotized / But when I look at you baby it's justified." She's REALLY got a bad case of the Bieber fever!

But she's not the only one addicted to their chemistry! A source tells HollywoodLife.com that "sex between Justin and Selena transcends any hookups they’ve ever experienced before." So does this mean we can expect a Jelena reunion soon? Maybe...

“Selena is the only girl he’s ever slept with that he actually has real feelings for, so sex with her is on a different level," the insider dishes. "He’s been with girls that have a lot more experience, who are way more wild, which is exciting, but in the end, it’s still Selena he would pick over all them because he loves her." When you're ready come and get it Biebs...