Also, how was he "scarred" by previous relationships when he was only 17? I suppose he must have had some when he and Laurell were merely BFFs.

I really think it sounds like as soon as her marriage ended she leaped straight onto the nearest thing, aka Jon. I mean six months later? Although she's so poor at communicating, she could mean six months after she started going out with Jon, I suppose... how long did it take between breaking up with the husband and getting together with the fanboi?