Swae Lee's a womanizer who wanted to have his cake and eat it too ... so claims his now ex-girlfriend who just explained to us why she dumped his ****.
Marliesia Ortiz tells TMZ ... she and the Rae Sremmurd rapper had been dating on and off for about 4 years, but now she says she's done with him for good. She calls their relationship toxic and says he's not worth it because she's done putting up with his cheating ways.
Straw - Couple - Days - FaceTime - Swae
She tells us the final straw came a couple of days ago when she was on FaceTime with Swae. You can hear the rapper unsuccessfully trying to convince Marliesia...