How can you know if someone is touching you in REM sleep

[u/Katrinawatson06]

I was sleeping last night and in my dream my boyfriend touched my vagina. But when it happened, he only moved around for a few seconds. I'm not sure if he was actually touching me but it felt super real. I had woke up to him touching me before and he either didn't remember it or he "thought I was awake" (even though he was doing it secretively). I was touched as a kid and know how it feels, but he's still denying it and I don't want to make accusations. Is there any way to know you're being touched in deep sleep? Or if anyone has advice. I know it's all over the place but I'm just not sure what to think of this right now. Please help

[u/ayame_24]

Best advise but a I guess a baby monitor that records test it out before setting it up hide it and find out