OH had a fling (ONS) when with 1st wife. 1st wife and I have become good friends.
Women he had ONS with is a bit nuts according to 1st wife and OH best mate - has lied about having cancer for yrs - also gave 1st wife hard time.
She emails OH from time to time (really really boring academic shit - OH not academic or to my knowledge interested in what she's up to - and detailing her "cancer battle").
Once (few yrs ago) saw a series of MSN messages between them where she was pretty inappropriate (reminiscing about their ONS and talking about sex in general) he didn't say anything out of order but did not stop the conversation/pull her up.
He promised to block her from MSN (she just makes me really really uneasy from what his ex and friend have told me) which he has.
He is away for 4 months a year and so I check his email for him at his request so his account doesn't get closed. Last yr on his birthday she sent birthday email which I replied to saying he's away, we're engaged blah de blah - kind if a really nice please fuck off.
She has sent another email this year - I am really tempted to email her from my own account and ask her to leave him alone/ask what she expects from continuing to contact him.
I know IAPBU but it really bugs me and I don't really know why
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