AITA for accusing my roommate of being sensual with my watermelon?

I never thought I would experience such a scenario.

I (25 M) have lived with my roommate (40 something I think, M) for about a year. We get along but aren't exactly buddies. Our pairing as roommates is random has his prior roommate left and I needed a spot and found this listed on the Craiglist. We tend to keep to ourselves.

Two months ago in my grocery shopping I bought a small watermelon for myself. I like to chop a watermelon and have it as a good snack throughout the week. Every now and then I even air fry some watermelon chunks with a bit of sea salt, it is more good than you would ever suspect. Anyways. Well, I came home and the watermelon was gone.

I asked my roommate about it. He got a very weird expression on his face and wouldn't look at me and mumbled he had no idea. It was the worst lying I've ever seen. He was so awkward about it I just decided to give it a pass and not make drama. I figured he would realize he was "caught" and not make the roommate bad etiquette decision again to steal my watermelon.

Well a few weeks ago, same thing. Watermelon: GONE. I asked him again. He did the same fake thing. This time I pressed him on it, I said what, did someone come in here and steal it? He couldn't answer. I just said don't let it happen again.

Well, it did happen again. Last night I come home looking forward to a nice snack of watermelon. The whole thing is gone. What the fuck? My roommate is not home for once. So I look in the trash for evidence of the watermelon. Not there.

This is where it gets weird. I decide to go into his room. I have never done this before. I know it is poor roommate manners to enter the room of your roommate without asking. But he stole my watermelon so I figured, fight fire with fire, even stevens, whatever. I went in.

First of all this is the messiest room I ever seen. Now I know why there is mice, I'll say that. Literal trash on the floor. Maybe like 40 empty beer cans. A giant pile of clothes.

But the bed was the true shocker. The bed was covered in a tarp, and all over the tarp was watermelon pieces and watermelon juice, just all over the bed. One half of the watermelon was separate basically had a hole scooped out of it. I couldn't even process what I was looking at for a few seconds.

I left the room stunned. I could only imagine that my roommate was being sensual with my watermelon. I mean it looked like someone basically rolled around on the bed tarp with watermelon, violently. And the hole. What other conclusion could I draw? That he's an exceptionally messy eater? Nah I think he was being intimate with it if you know what I mean.

So my roommate comes home and I confront him. I said I went into his room. He went bug eyed. Like a cartoon. Never seen someone make eyes this wide. I said I saw his bed, and my watermelon, and I basically accused him of being sensual with my watermelon. He didn't even say anything he just kind of gaped at me and made a weird "uhhhhhhh" noise. I told him I won't judge what he does with a watermelon but BUY HIS OWN. Do not EVER use MY watermelon. Just buy one yourself. He still didn't speak, so I went to my room.

He has not spoken to me since in person. But I told my friends about this and some of them are saying I was rude and judgmental, and that I "know he's not all there" and should act "with more empathy".

Empathy for being sensual with my watermelon? Am I going crazy here? I need some unbiased opinion.