BM...I'm not PDT but that's exactly what I wound up telling my W a couple weeks ago after I found out she went out on a date with OM while I watched our son.
It felt great to stand up for myself.

Good luck with your sitch.

Me-39
W-31
S-4
Bomb- 9/5/09
Discovered EA- 9/15/09
Found "proof" that EA is most likely a PA- 10/8/09
W moved out 10/31/09