Should i love her because she loves me
So there's girl 18F and I (20M) so she was in relationship with a boy 18M i helped her to move on during this we started talking for hours n hours and we eventually started dating even though she is nothing like me our interests doesn't match at all our vibe matches sometimes but she's caring she loves me but I accepted this all things and decided to give it a chance even though I wasn't sure abt her and i decided to see where things go but after some three months i saw that she was stalking his profile i have her ig login in my device she don't know that may be she's not got over him so I thought if she still likes him after what I did for her then why should I compromise for her so I told her that I am not sure about you so she said that "why you played with my feelings ,you should have told me this at start ".I believe that if we stay in relationship she will love me and she will be loyal to me but after I told her that I'm not sure abt her she texted that guy again he haven't replied yet .
Tl;dr What should I do next
Should I geti n relationship with her and see where things go
Or should I leave her at her own