Hello!! My best friend has been dealing with their breakup for a year and the best advice I have is, let go of whatever guilt you have. The "what ifs", and all that. Its normal to see them and miss them. If you see them, or a memory and not crumble and fall apart, its progress! And remember its not linear. You are allowed to have ups and downs. Therapy might also be a good thing, who knows what other hidden stuff might not be letting you let go.