According to research we you found, that it is very tough for us to forget someone, we love for a very long time. Because when any couple stay together, they not only shares physical part, they also shares few moments that is not possible for anyone to stop loving. So, thats why we came to see 90% of the relationship last long due to the love and affection and the pure bonding, they all have for each other. So, if you are asking (can you ever stop loving someone)/ Then the answer to this question is absolutely true. So, if you also have serious relationship, then maintain it with respect.