Definition: Given a real-life anecdote of a complex ethical situation, generate a suitable title that describes the main event/root cause of the situation. Imagine that the given text is a social media post, and you have to write the title of the post, so the users can decide to read the main text or not.
Input: *Heads up-- some folks my find this a little gross because it involves anal sex and shit*

I (M, 25) have been hooking up with a friend of mine (M, 29) on and off for a while now. We've both been pretty explicit about the fact that we are friends with benefits, and nothing more. Just in case you need context for our relationship.

He came over to my place and we started to have sex. For the uninitiated, sometimes the recipient of anal sex needs to prepare by cleaning out their rectum (not always necessary if you have the right diet for the record). He told me he was prepared, so we went at it, and one thing leads to another, and I look down and see his shit squirted out a little. In the process the fitted sheet came undone, so there was shit on my sheet and the mattress itself. In all fairness, it wasn't a lot, and it was pretty diluted by the lube. Still though, pretty gross. 

When I saw what happened, I was instantly turned off. I told him "hey, I think I'm done" and he looked down and started apologizing. I told him it's okay, and it happens, but at the same time I was gagging, almost dry heaving, at the sight of it. So I ran over to my closet and tossed him a towel and asked him to clean it up. I couldn't even look so I told him I'd meet him in the shower when he was done.

He joined me in the shower and we made out a bit, but we didn't do anything sexual beyond that. We hung out for a bit after that and watched tv, but I could tell he was uncomfortable. Eventually he got home and then texted me saying how embarrassed he was. I told him that there was nothing to be embarrassed about and that was that.

I washed my sheets thoroughly in hot water, and that definitely took care of any germs or stains. My mattress cover was plastic though, so it wasn't washable. I went out to buy a new one. When I did, I texted this guy asking if he would be okay paying for it. It only cost $8. Then he responded "I said I was sorry. Didn't realize it was such a big deal to you." I felt bad about putting him on the spot like that so I said "How about you just buy me a drink next time we go out?" He responded "I don't know if I want to go out again. You really made me feel like shit over a normal bodily function. I was so embarrassed." And that was that...

I get he was embarrassed, but I feel like he's overreacting here. Am I way off base? 

**tl;dr:** The guy I'm hooking up with got his shit on my mattress cover. He was really embarrassed and my reaction clearly didn't help the situation. I asked him to pay for a new one, and he said I was being petty because it didn't cost a lot.

asking my fwb to buy me a new mattress cover