Being a married couple, you need to communicate with him if you do not feel happy with him getting too close to this girl. I am sure he will say it is nothing and that they are just friends. However, you need to explain to him about your uncontrollable jealousy. It’s because you love him a lot. Since you have already tried and you are still jealous, perhaps tell him not to mention this girl in front of you? Since there is nothing going on with him and her, just let whatever happen in office stays in office. You don’t need to know if he made coffee for her.

You just need to know that he love you and will never cheat on you.