My D-Day was 8+ years ago.
Since that time my WH has not interacted with ANY woman other than purely professional interaction on the job. No phone calls from them or texts either, all work-related issues via email which I have access to.
No discussions about the weather, the family, the weekend, nada, everything has come to a complete halt. Stopped attending all social events on the job involving women. No problems with family and close female friends that are friends of the marriage, and I am usually present when we are with my friends.
You need to be proactive in doing or (not doing) what makes your BS feel safe.
My WH has had no issue with this boundary since D-Day, and he understands that he does not *need* to interact with any women except professionally.
Your BS may feel differently a year or two down the road, but right now she is probably an emotional wreck, and ANY woman in her mind is a threat to your marriage. Not rational, but nothing is rational after this nuclear bomb is dropped on your marriage.
The only men my WH socializes with out of the office are family members and an occasional breakfast with a male friend.