Dear Tamara,
a warm welcome to our forum. Please accept my deep-felt condolences for your loss.
Be sure that we all understand you and share your feelings of grief, miss and love. We all experienced the same – in different circumstances but the result is the same. We all have lost the most loved person of our life.
The circumstances under which you got to know the sad news are tragic. To loose contact with your loved one and then after days getting to know that he died is especially painful. I am so sorry for you.
But please see that also for his parents his sudden death must have been a shock and they are struggling with the situation. Perhaps they do not know how to contact you, have no contact details such as you do. I think you did right to leave your mail address in the obituary, this gives them the chance to contact you.
I wish with all my heart that you will hear from his parents.