don't hide it. Tell her the truth. It doesn't sound like she'll have a real problem with it. If she does, tell her you can discuss it if she likes, and at the very worst you can promise to stop, and just not watch it anymore. But it doesn't sound like she'll be that upset about it.
You shouldn't have lied in the first place. Watching pr0n is not that big a deal. The fact that you lied will make her loose a little trust. She knows you watched the pr0n. I say come clean. Then say you lied because she caught you off guard and you were embarrassed.
Why lie about watching p*rn? Unless your uncomfortable with telling your gf you obviously wanted to warm up before the "gym" lol!! Check this... About two year ago, I was over at a friends, waiting to book tickets online. Before we could book them we had to wait on his step-dad to get off the net... Anyways he gets off we go and book the tixs, and god only knows why, but my friend says to me " I wonder what he was doing on here so long?" I reply "check the history". After a few clicks, we find multiple p*rn sites, TRANSEXUAL p*rn SITES!! My friend decides to inform his mom, turnsout that he was a member of a few sites and was using her credit card for payments. Step-dad gets kicked out for about 2 days, friends mom let's him back in and convinces her to kick out my friend for being nosey, and no respectful of others privacy. He hasn't spoken to either his mom or stepdad since. That's embarrassing, and ironic.
What's the big deal...it's usually only awkward because neither side wants to admit they've watched it before..
****z it's like that? Gotta report that to mom huh? Anyways man, She did not even really catch you in the act so who cares. Just tell her the truth no need to lie about this petty stuff. She already knows you did regardless.
Is this going to become the new Clutchfans euphemism for sex? "I met this girl last week, and oh boy, we totally ended up eating pizza at sbarro at the galleria!"
LOL, this is probably why she was confused and questioned you about it. She's thinking what is wrong with this tool, is it 1995?