The best friend gained the diploma, but became a soderzhanka

During study at institute I had a girlfriend. We arrived to the capital from the different cities and got acquainted in a hostel. She dreamed that after obtaining the diploma her life will cardinally change to the best. As a result in 5 years she could gain the diploma. After that told that found good work and moved to live in Sankt – Saint Petersburg. Then we began to communicate much less. However I had opportunity to watch life of the best friend as it constantly posted photos on social networks and instagramme. She bought to herself branded things and expensive Apple iPhone...