Early on I did, and I felt TERRIBLE about it, I couldn't stop mentally obsessing over it and when I saw him next I said "I'm so sorry but I lied to you last time" and then clarified what the truth about something really was

I lied in a moment of panic, he asked me a question about touch related stuff and male VS female and I was terrified to answer male and have him assume things so I lied and said female.

Since then, no, I haven't. However I often wonder how much truth he shares with me.