Contacting the Spouse of the Cheater

Is there any legal reason why I should not contact the spouse of the person my husband is cheating with? The spouse is aware of the affair and they will be divorcing. My husband is also divorcing me. Neither of the parties have filed yet. I just feel I have some relevant information the other spouse may want to know before he signs anything. I also feel since we are both the ones being cheated on, we have common ground, and though this might sound unusual, may be of some support to one another. Obviously, the cheating parties have each other to lean on.

The cheating parties are flaunting their affair very publicly.

Thank you in advance for your response.

There is no legal reason why you cannot do so.