Nova, read what you wrote again to understand the confusion in your feelings and in your request. See examples:
You wrote, "I am so sad and depressed, because I know that both of us love each other and I am sure he loves me more than his fiancée!".
You wrote also, "I don't know if he knows that I love him and I don't know why he doesn't talk to me about his feelings."
Was this assumption, or fake feeling? Read, "I noticed that he really loves me! I saw that in his eyes and the way he talks to me in the class."
Avoid confusion in love. Read your problem again, so you could see the psychological side of the problem.
In addition, there are some questions about your nationalities to know the backgrounds of you both. If we knew them, we could see what he wants, or perhaps that feeling could only be a kind of "pure" admiration.
In this case, the real names, or nicknames relevant to your backgrounds could explain more and let us know the cultural aspects of your backgrounds, so we could read and understand the problem more.
Shalu, they will divorce and then kissing each other, which irritates you?
There may be misconception about love. Per your words, "They don't love each other and very soon they will be divorces" and then "I see them kissing" that is a confusion.
You haven't provided full information and you haven't wrote about the problem step by step, so we could understand what has happened first, second and so forth.
Organize and write your problem in sequences to understand it better. Provide details.
What makes you feel they don't love each other? How did you know that they will divorce soon? Did your lover tell you about this? When? Did your lover tell you about what he wanted to do next? How could they in such situation kiss each other?
* Are you from Saudi Arabia, or Italy?
Read and write about your city and upload pictures from it at Any Beautiful City.
You'll get gifts when you write. The gifts show you how to use one of your hobbies to build it a business on solid grounds, even if you were a student.
Then, you'll find that hobby generating income for you when you graduate, so you could continue with it to improve your life.