The best thing I can tell you in front of the possible gossips someone may spread about you. In this case your husband, is what it has been mentioned: People who listen to a rumour and spread them or believe them without testing are so guilty as the one who began it all. So, they aren’t worthy in your life.

Then, in regards to how to take it. I know it’s tough and unfair, but most of the times, the best battles are the ones that are not fought. It will be made stronger not to react.

There are millions of people out there. I’m sure you can get real friends. Anyway, don’t discard the possibility of these friends of your husband being decent people. You don’t still know.
Never lose hope, HH

P.S.: I also had always a high sense of justice but it took me to make errors and sometimes I lost more than I won. And put fairness and justice over people and the second change everyone deserve as a person.

When you .know someone commit an injustice with you. Feel sad but console yourself. You have the right to be sad and feel bad but it will pass, before you believe by not intervening. You will grow stronger. .