On a short break with DP, for a big celebration for him. I have never been to the location (his choice) before, and throughout all preparations and plans, including meeting with friends who had been and asking them for advice, he led me to believe he had never been either. 1 day in he accidentally let slip he had been before with his ex. I wouldn't have minded at all, he knows that, but now feel quite misled and it has taken the edge off everything knowing that all the time we were planning things together - me thinking it was the first time for us both - he had actually done them before. What also annoyed me was that he wouldn't admit that he misled me, and kept pretending that I had known all along, which was ridiculous. Eventually he admitted that he had been avoiding talking about the previous visit but still assumed that I knew but I don't believe him, it makes no sense. I kind of understand why he did it, but feel like he used me a bit to get the experience he wanted. I haven't say anything since the original discussion because didn't want to spoil the trip but I do still feel a bit weird about it. Am I overthinking it (I do do that a lot)?