I liked a guy for 7 years and i was planing to tell him but now im not even sure if I love him and i loved him so deeply i would even have gave up my life for him. Also I saw my friend that had long term relationshios 5 years or more breaking up or cheating. So does love always end or love can be forever?
All of your loves will end, until you find the one that will last for the rest of your life. And it is possible to find that one person.
What a lifetime love requires is two people who can grow together. Everyone changes as they go through life, and not just when they're growing up. People change when they are children and when they are retired. My first serious relationship ended because my boyfriend and I were growing in ways that weren't compatible anymore.
My current boyfriend is, I think, my lifetime love. I feel this way because as one of us grows, we both do, and we are always able to help each other overcome difficult things.
So... find someone who makes you want to be a better person, and who you understand well enough to help them through everything. Find someone you can grow and change with, and your love will last.