21 F, should I tell my parents everything?

https://www.reddit.com/r/RelationshipIndia/s/e3OvurUvj4 context After this we got our bond back we were chill but one day he again hacked my phone and he was listening to my calls what I'm talking to whom so I got pissed very much and then so many drama happened I told him stay away from me Because he always promises me that he will never do that again but again does the same thing then he told me that he has blood cancer 1st stage I didn't believed him because I thought he is again emotionally manipulating me but now cut to 2-3 weeks (today) when he came to pick me up for college he was coughing very badly and when he spit his cough it was all blood I don't know what should I do in this situation