hey sorry to hear your situation. I am a married man and got involved with another person. I feel in love with this other person and i couldn't leave my wife but after a while i had changed my mind but it was to late. So the answer for you is let it go. I know its hard but there are many others out there. Think of what you had and the times you shared it was special and those times will life in your heart always. I am nearly into a year since my encounter and the pain dosent go away but learn to embrass those times. You are young and not all men are arseholes. Find someone who is like the married man there is no rush. And marriage isnt what it seems. Live life and experience what it has to offer before getting tied down. You dont want any regrets when your older.
What you had will come again I wish you well and I truley understand your situation believe me. Best of luck hun.