I have an ltr for a few months, and she told me before quite some time she masturbates, and from a young age. I really don't like it, I feel as if it's cheating. I'm planning on telling her what I feel about it, I have a few questions:

  1. Do you think my opinion is justified?
  2. What would you recommend as a way to check that she doesn't continue and just lie about it?

Extra info: Both of us have a body count of 2(Including) , she claimed (from the start, her previous bf never made her cum, neither did I, although I made lots of effort, read, studied, can last pretty long and am well endowed, I didn't give up, but I'm prioritizing it less now though because it feels as it I've done everything)

She says she can come from porn within a few mins, unless she lives an extreme double life i'm the only dude in her life who isn't family.