Answer:
It depends on which word you want. Relieved means to feel relief, to be happy that a crisis has passed: She was relieved when she found out she had passed her exams. But to "relive" something means to experience it all over again (to live through it again), like having a flashback to an experience and remembering it. When he saw the place where his car had crashed, he relived it in his mind, even though it happened ten years ago.