history: My girlfriend and I were watching a series on netflix. She wasnt home and I ended up watching a couple episodes ahead of where we were at. My girlfriend and I were watching a series on Netflix.  She wasnt home and I ended up watching a couple episodes ahead of where we were at. I've been in that situation before. Did she find out about it? 
current: She didnt say anything but I think she knew.  I mean, I still watched the episodes that she missed with her!
next: Well that's all that matters. If she was okay with it. I'm sure she was happy watching the episodes with you, even if you had already watched them. 