AITA for not warning my hookup about the snake room?

Ok apologies for the clickbaity title but that's literally what it is.

I bought a house a year ago and living alone in a 3 bedroom house, I had plenty of room to spare.

I have a pet snake, a ball python, she's full grown at 4.5 feet long. She's very lazy and chill, and mostly just lays around under the heat lamps in her tank.

But when I bought the house, I decided to let her have the run of a room, since I had extra space. I sealed up the windows, door, vents, light fixtures, pretty much any crack she could try to squeeze through, and leave the top off her tank so she can roam around. I got some big pieces of driftwood and screwed them together to make basically a big cat tree for snakes, she loves climbing it and hanging out by the window.

Though a lot of the time she still lays in the tank since she likes the heat lamp. I've also got a few aquariums and terrariums in there with my octupus and lizards (all very well covered to keep the snake out lol)

I've also got a sign on the door that says "no step on snek" (this one lol https://m.media-amazon.com/images/I/518gmSwLrvL.jpg)

So with that context - I had a guy over my house for a hookup, we'd met at a bar, judge if you want lol but that was the situation.

And for some reason he went upstairs to use the bathroom (I told him where it was) and after peeing went and opened the snake room door? I only noticed when I was downstairs getting us some waters, and he yelled from upstairs and slammed the door.

He was yelling that there was a snake in my house and I called back that I knew, that was my snake, she's chill. He came downstairs screaming at me that I should of warned him, that I was a crazy (b word) for having a snake just out in a room that he thought was my bedroom.

I asked him why he was going thru my rooms anyway, I just said he could use my bathroom. He said he was looking for my bedroom because he assumed I'd meet him up there? But he was basically berating me for having a snake and not telling him.

I said there was literally a sign saying the snake was there on the door, and he basically called me crazy again and walked out, saying I should have told him before he came over

I felt like I didn't need to since it's not like I would have brought him in there anyway and didn't think he'd just be going around looking in all the rooms? Like that's kinda weird...

AITA for not warning a guy about the snake room?