Am I being over reactive and expecting too much?

My boyfriend of 6 months he is 58 (m), I'm 53 (f) has 2 grown children but puts them first. I have no family at all. He has never said he loves me, has stood me up on a number of occasions without even the courtesy of a text.

We have never had an actual date where he has taken me out to a nice restaurant. We always pay for our own meals at cheap restaurants.

He has pretty much kept me secret from his family as he is private and feels uncomfortable as his family is still close to his ex. He says some pretty mean things but then tells me I am over reacting when I question him. He clams up and doesn't communicate and then gets angry.

He has only a couple of narcissistic red flags and generally is a nice person. But when he says mean things and I get upset, he gets angry and walks away. He never says he is sorry or if he does it is almost said begrudgingly but I seem to apologise an awful lot. I know I do things wrong, but I feel often disregarded.

He has a high pressure job and he blames his workload for being grumpy a lot of the time.

When he is in a good mood he is awesome. But it doesn't last long and he is grumpy with me again. I feel I am walking on eggshells but he says and acts how he likes. I feel I give a lot more of myself in the relationship and he only gives when he is in a good mood on his terms. It has been an emotional roller coaster.

He wanted me to basically disappear because he was meeting his ex brother in law and son and didn't want to feel uncomfortable with me around. (We live on our boats in the same marina and our boats are berthed beside each other hence he didn't want me around as he didn't want to introduce me). When I challenged him he yelled at me, swore and told me that I needed to get over it and to go to hell. He said we are done because I expect too much and he gives a lot in the relationship.

Even though we live in such close proximity, I hardly ever see him during the week as we both work. He can be sweet and charming and then grumpy and mean. I used to send texts saying Have a great day etc but he rarely responded. He only responds when he is in a good mood. So I have given him lots of space, but it seems that still isn't enough.

He refuses to talk about anything and sweeps things under the carpet until things are so bad that he loses his temper and yells or laughs at me or is sarcastic.

Am I expecting too much and over reacting? Am I being too clingy?