You’re scared. Not crazy. Nor delusional. Nor weaker than he is.
Right now, you’re convinced he can talk his way out of anything. Why is that?
Gently……it’s because you fear the truth, you are very willing to "accept" whatever he says and shrink away from having to take action. It’s "easier" to deny and avoid facing his infidelity than having to make any decisions that alter your comfort level and situation right now.
It’s not weakness. Nope. It’s fear.
I personally do not think it’s "easier" to resort to denial and not face this head-on. I think that’s harder, actually. It takes a hell of a lot of strength to go through every day knowing you have a cheating partner and pretend that there’s nothing wrong, la-la-la-la. You have to have a lot of inner strength to keep telling yourself things are okay, stay calm, pretend you’re fine - when the truth is you are collapsing internally.
It’s like shouting to the world "I am fine!" while knowing your very cells are on fire.
So, no, you aren’t weak. I would venture you’re avoidant and fearful of changes you cannot predict if you confront this head-on.
The truth is, that’s a NORMAL response to this situation. Normal. Any person faced with this situation would have similar fears and thoughts.
One thing I need to clarify is that you are not searching for pills when you super-clean the house. He may have other things hidden. Other phones, tablets, notes, messages, diaries, prescriptions, bank statements, receipts, cards, letters, gifts…you don’t necessarily know what he has, because he is lying and gaslighting. If he is able to have an affair, he is capable of hiding and lying about many, many things.
You don’t really know until you look.
Also, it may pay off to do a google search on his emails and phone numbers. You may find things by doing that.
As for the pills you know are in the suitcase?
Oh Hell yes, I would remove them.
At least you guarantee he is going to have a "less fun time" without them.