My ex wants to have breakup sex??

Jackie

After almost 3 years, He ended things about 2 months ago. He moved on really quick actually. I haven't really talked to him much and I don't care to. I'm taking the breakup really well and just focusing on myself and having self love. But he texted me and said if we can have sex for one last time. Like obviously we're broken up,he's moved on. I'm just confused on why would he even want it if he has a girlfriend??