Hi Dev. You definitely should not say it's ok for mommy to have male friends (without you present). After my first wife kicked me out she actually had the OM sleeping on her couch and telling my kids he just needed a place to stay and was helping around the house. My kids were confused but eventually figured it out. Now 10 years later my sons have a conflicted relationship with their mother. But hey, that's water under the bridge.
As for the suicide threat, that definitely seems to be a cry for help. Seems to be a consistent thread with her. However, I would not sweep it under the rug. I perhaps would have called the police on Veterans Day to check up on her. You don't want to be perceived as running when she calls, but her threats should be taken seriously. If she mentions it again, I would just ask her why she would want to hurt her own children by doing that.
I can see she's conflicted with her life. Too bad she doesn't see reconciliation as a viable option.
M: 59 W: 53 M: 9 yrs T: 14 yrs No kids together but D30(hers), S27, S24, D21(all 3 mine) W moved out 11/18/2013 D-Day 12/14/2013 W moved back home 12/1/2014