So,
life changes. You think you have it all worked out then it changes. Who you trust, who you love and and even good Friends come and go. Sometimes people just move on and other times its more painful because of what they do to loss your love, trust and friendship.
It can be hard to move on when someone hurts you but you do over time even if you never want to trust them with your feelings again.
But everything happens for a reason and in the long run it all works out for the best