1. Stay calm and establish healthy communication: First, try to stay calm and don't overreact or get too excited. Talk openly with your husband and ask about their history and relationship, and how he intends to deal with this situation. Let him know your feelings and worries, but respect his decisions and actions.
2. Respect each other: Although you may feel uncomfortable or uneasy, it is very important to respect the feelings of your husband and ex-girlfriend. Don't try to interfere or control their interaction, but try to be polite and respectful.
3. Set boundaries: If necessary, you can set some rules and boundaries with your husband to protect your relations and avoid unnecessary pressure. We can discuss how to communicate, when to meet, and how to deal with any possible problems.
4. Seek support: If you feel very troubled or unable to handle it, it may be helpful to seek professional support. Professional organizations such as consultants or family therapists can be considered, and they can provide neutral opinions and useful suggestions.
In short, dealing with this situation requires calmness, understanding and respect. It is very important to communicate frankly with my husband and find a solution to the problem together.