I hope your cop friend is right. I guess you can't answer them if they're blocked? I would be tempted to send back a message like "BFF? I don't think so" just to see what kind of response you got.
I can't believe your H is angry with you about this. You sure have done nothing wrong! Someone is doing wrong to you! I wonder why he's downplaying it so much? If he's still seeing OW, but thinks you don't know, that could be the reason. Perhaps he's trying to keep in under wraps.
But if it is the OW, she sounds like she's getting desperate. I'm sure she's pushing him as well. She may be digging her own grave. You just need to keep on DBing! (This seems to be what is happening in my sitch, too.)
