So I like this girl that I know and I am most certain that she likes me back, but recently I found out that she’s been trying to make her crush on me go away. It saddens me that she’s doing this, especially when I like her back. I feel like she’s just using me or toying with my feelings. What to do?

I think you should tell her this. Exactly what you said. If she’s wanting to make her crush on you go away, there could be a reason for it. If she can explain, then I’m sure a lot of the confusion would be cleared up. Most girls are either embarrassed or scared to admit feelings. She could also think she doesn’t
have a chance. If she clearly cares for you in any way then she probably isn’t toying with you. She just may not want a relationship at the moment. Of course this all depends on the girl.