Exactly dear Rui,
This is your principal problem, that you continuo "feeling" what happen before.
¡BE FREE OF YOUR OBSESSIONS!
Not more thinking in the past, the past is history, build your present, you now have some experience, use it.
People in our life is energy, and humans need energy to live, friends are energy, lovers are energy, family is energy, feed your soul of this energy and if some is wrong, trow out the negative energy and continuo.
Be strong, and INTELLIGENT