If he's not homophobic then tell him

I never hide anything from my bf, and so, we were talking about trying new stuff in our sex life, we smh start to talk about anal sex, i said sure, just make sure you prepare this and do this and this etc, and he ask me why do i seems to know a lot, i said 'oh cause i love to read yaoi, been reading for almost 5 years...... (start talking about how i worship yaoi god)'. He doesn't like gay stuff but also never talk bad about them either, that's why i'm not really worried about telling him, he was pretty cool about me liking yaoi.