Was I too nice?

Three guys from an old school out of the country contacted me to be their friends when they come to the United States. They didn’t know anyone else but me. They didn’t want to waste their parents money because of loneliness and not being able to cope in a new country. I accepted and helped them. Mostly talked to them. They became accustomed and we kept in touch for years. Recently I learned that they are somewhere online laughing at me that they only talked to me because they were lonely. Now I regret helping them. I was there as a friend, helped when and where i could I thought I was being a good human being by helping people adjust to a new life. Now they’re laughing at me saying they were lonely. lol let me stop being nice
Was I too nice?
Post Opinion