My bedroom curtains are about a cm too short to be wide enough for the window so I put a peg on them in the night to keep them together because I can't sleep when light gets in so wouldn't have forgot to close them.
In the middle of the night DP got up to go to the bathroom and I heard him as i'm a really light sleeper, while he was in the bathroom I turned over to face the window and the curtains were wide open (my window is about 7ft wide so couldn't have blown open that far, plus the windows were closed so there was no wind)
I asked him when he came back from the bathroom why he'd opened them and he was adamant he hadn't touched them, he assumed that I'd done it. I said that he must have done it on the way to the bathroom and forgot as he was half asleep but he says he was wide awake and would have known if he'd done it. I didn't sleep for the rest of the night cos it really freaked me out, if he's adamant that he didn't do it and I definitely didn't do it then who did?! 
The only other person in the house is DS who's in his cot in his own room, he's 7 months.

AIBU to be really freaked out?!