You're on a class trip with 2 other classes,visiting a museum of history. You're in class C and he is in class E so you're not exactly classmates so you barely knew him

As you're in the museum and the employees greeted you, you were told to seperate into small groups and explore the museum. You paired with your two friends. He did the same with two of his friends

As you were walking through the museum you notice he has been rather close to you...weird