I was talking about me, I'm not saying you have the same thing going on. tell your parents you have depression and want to see a therapist for it. it's a good catch all, will almost certainly be true in any case, and is sufficiently common that they won't suspect anything.

but you really should talk to someone. I promise, you don't want the consequences of this kind of repression weighing on you decades later. I can explain what that's like if you want but otherwise I'll spare you the gorey details.