Guilty

So, been with my boyfriend for about 6 months.. And I tend to ask him about how often he masterbates and watches porn.. Just a curiosity thing. And he told that he's only done it like once in the whole time we've been together because I was on my period... Idk if that's normal or what? And then he asks me if I do it, and I just say I haven't since we got together.. Which is lie.. I just feel like if I tell him that I do masterbate and watch porn pretty often then he'll get cut or something..? But I feel so guilty for doing it and then not telling him.