OWH will file D. OW will panic, knowing that she can't have her husband and yours. And she will be forced to choose. My guess is that she will choose her own husband over yours. Your husband, feeling scorned, will be hurt and angry with her. Her husband, after she unsuccessfully pursues him, will toss her out on her ear. She will be alone. And your husband will also be alone, having burned the bridge to OW with angry words after she dumped him.
After that, my crystal ball gets a little foggy...
