How someone can say that he loves you so much at one point and tries to end things with you at another point?

Does the person really love you from the start? 

You really don't want to doubt the person. Why? Easy. You love the person. You don't want to doubt the person's love in case you offend the person. You believe that inside this person, there is still love for you. You don't know whether you are being delusional. You don't know whether you just don't want to move on. You don't know what to do. 

At times like this, you will feel crazy. Why? You don't know what to do. On one hand, you don't want to move on because you know the person still loves you and you love the person back a lot. You've talk about having a future with the person and everything was good. The person took so many risks to be happy with you. On the other hand, you just feel so tired. You are tired of all the games. You are tired of everything. You don't know what the person is trying to do to you. You just feel like giving up. Your heart breaks every single time something shitty happens because of how much the person means to you.

What do you do at this point in time? 

Continue to accept the pain and believe that what happens in the end is worth it?

Or move on and never feel as happy as you could be?