DP wants to end relationship over misunderstanding with waitress

A few examples -

On another meal out, I wore some jeans that he didn't like. He told me to burn them and never wear them again. He then was comparing me to other women in the restaurant and said I looked out of place.

It was his cousins baby shower and he had asked my advice about what to get as a gift. I suggested a nice outfit for the baby. He didn't like that idea and said no to everything else I suggested. I eventually told him to just get a gift card if he wasn't sure. Hours later he called back saying his mom had said that, that was a terrible idea and told me I had "taken advantage" of the fact he'd never been to a baby shower before and given him a shit idea on purpose. I was very confused about the whole thing.

Another time, we ordered Chinese and had to go and collect it. They only accepted cash and both of us had somehow forgotten our cards, so we couldn't withdraw any cash. I was apparently "stupid" for doing this and was told to "shut the fuck up" when I brought up the fact he'd also forgotten his.

On a day out, he randomly told me he hated my hair and I shouldn't do it like that again.

He always says I never make any effort with my appearance, which is baffling to me because people have always told me I look nice. I'm known as "the glam one" at work.

Has sent me the profiles of instagram influencers who he thinks I should get tips from.

Honestly there's loads of stuff, and writing it all down makes me realise how bad it is. But there are good times. Amazing times in fact, where I'm in tears from laughter, he's really loving and affectionate and he's telling me how much he loves me. It makes all the bad stuff go away. Until it happens again.

My parents had a restaurant, I worked there in my teen years. I would never have argued with a customer! It would have been “I’m I’m sorry, I’ll get this sorted for you” with a smile on my face.

Tell him he is dumped and hand him a bag of mushrooms for the journey home

The question is not should you have lied. The question is why are you with such a weirdo. If he’s having a tantrum about mushrooms he needs to get a life. And making you cry over mushrooms. He is a mushroom. Tell him to fuck off. Clown.

A few examples -

On another meal out, I wore some jeans that he didn't like. He told me to burn them and never wear them again. He then was comparing me to other women in the restaurant and said I looked out of place.

It was his cousins baby shower and he had asked my advice about what to get as a gift. I suggested a nice outfit for the baby. He didn't like that idea and said no to everything else I suggested. I eventually told him to just get a gift card if he wasn't sure. Hours later he called back saying his mom had said that, that was a terrible idea and told me I had "taken advantage" of the fact he'd never been to a baby shower before and given him a shit idea on purpose. I was very confused about the whole thing.

Another time, we ordered Chinese and had to go and collect it. They only accepted cash and both of us had somehow forgotten our cards, so we couldn't withdraw any cash. I was apparently "stupid" for doing this and was told to "shut the fuck up" when I brought up the fact he'd also forgotten his.

On a day out, he randomly told me he hated my hair and I shouldn't do it like that again.

He always says I never make any effort with my appearance, which is baffling to me because people have always told me I look nice. I'm known as "the glam one" at work.

Has sent me the profiles of instagram influencers who he thinks I should get tips from.

Honestly there's loads of stuff, and writing it all down makes me realise how bad it is. But there are good times. Amazing times in fact, where I'm in tears from laughter, he's really loving and affectionate and he's telling me how much he loves me. It makes all the bad stuff go away. Until it happens again.

I always find that people who are rude or unpleasant to waiting staff (or retail workers, or cleaning staff, or receptionists) are pretty fucking horrible in all other walks of life, so you've dodged a bullet here.

Does not sound a fungi to be with,

Went out for a meal with DP and all was going well. That was, until the mains arrived, and DP was adamant he had ordered his meal without mushrooms, yet his food had arrived containing them. A bit of a back and forth started between him and the waitress, who was saying DP definitely didn't ask for no mushrooms.

DP then turns to me and says something along the lines of, "Tell her I ordered no mushrooms". I immediately felt embarrassed and mumbled, "I can't remember". I hate confrontation and I genuinely couldn't remember.

The waitress eventually took the food back to go and fix the apparent mistake and DP was absolutely fuming saying even if I couldn't remember, I should have lied and said that I did and he kept repeating "Don't you know I don't like mushrooms?" After about 20 mins of being in a strop, he said that he would now have to reconsider the relationship as he doesn't want to be with someone who 'doesn't have his back'

Like the emotional wreck that I am, I began crying at the table and he told me to stop because I was embarrassing him.

So my question is, was I wrong to say I couldn't remember or should I have lied?

This behaviour over mushrooms? Blaming you, causing a scene. You are better off out of that relationship - he’s shown his bullying true colours.
Whether or not you should have lied is the least of your worries, sorry.

Christ, why were you crying?

He sounds like a right knob but you need to get a grip.