We all meet someone or the other people in our life and that's how it's meant to be and works. We name it as "destiny".
Unplanned things of life. People whom we meet, know, talk to on a daily basis or long distance friends are part of your life. They all are connected with your life as part of happiness, sorrow, sadness, anger, depression etc. As not all will be good to you some may also try to harm you in a way leaving you behind with pain and scars in your life.
That's how life is : accept the truth, if you're in grief overcome from that, make up your mind, be strong and move on, many professionals advise to do so.
All must have experienced these things in their life. Meeting new people, making them part of life. As soon as our bonding with them increases, firstly all we do is share our personal and private talks with them, it's good to share your problems and feelings with others it eases our heavy loaded heart and for time being it helps to surpass that pain but it's all momentary.
Every individual you meet you always learn something different. It's important with whom you share your problems, feelings, emotions not all are genuine and trustworthy who really wants you to overcome those kinds of problems which you are facing or dark times.
Life is metaphysical beyond everything where you cannot predict what will happen next with you... It's in a way both phenomena and noumena. Phenomena where you can see something wrong is happening with you,but have no control over it and noumena it's like you don't know why it happened because before that problem was neglected by you and now you have been going through that.
Problems are not permanent in our life one can overcome it with "mindfulness" that means yoga and meditation. Learn to be selfless without depending on others. When you think things are going out of your control, consult a counselor or professionalist who can help you to show your way. Be still, focused and relaxed every bad shall pass by and a new day will come with hope and goodness. Don't let anyone control your mind and life. Surrond yourself with good people who will lift you higher , be in good company always.