<human>: Provide a brief overview of the text.

About 2 weeks ago I posted a question about trying to salvage a friendship with a guy that cheated on me 4 times over the course of 6 years. 
After getting some advice and thinking it over, I cut all contact with him and his friends. Last night he contacted me AGAIN and talked for about an hour like nothing had changed. I thought maybe he was trying to pull his old tricks and weasel his way back into my life but then he tells me he's proposing to his new girlfriend. 
They've only been together 2 months. We had 6 years. How can he move on so fast? I'm starting to believe he just used me and never cared in the first place.
<bot>: Ex calls basically to rub it in that he's marrying the girl he's only known 2 months. How can he move on so fast?