Vegetarian with a BF who cannot be filled

Why would I buy meat, if I can't eat it? He's welcome to buy it himself and cook it in his own house.

You're setting up a "me or the meat" situation that seems unnecessary since you said you don't even have an ethical objection. You might not always like his choice and he probably doesn't want to choose.

My husband who is 49 and my son who is 17 have never eaten any meat, the same with every family member on hubby's side since they are Hindu. Whilst none of them weight wise are as large as your BF it can be done.
I eat 500-600 calorie meal and put a bread roll, more cheese, more oil, larger servings, more avocado, extra dessert etc for them.
But if your BF wants meat and you have no ethical objections, maybe he can buy some meat and cook it at your place (maybe have a separate pan) for it, if you have any issues with that.

Just break up.

im vegan however my bf isnt, he'll ask for things like tofu or faux meat in stuff i make sometimes so i think its more of that theres something missing, you need to think of what to replace the meat with, so something high protein and "meat like" but yeah you could try faux meats and see if that helps

if all fails massive bowl of mac and cheese, thats aught to fill him up

but yeah ask him what he likes, i.e. my bf loves falafels and hummus so i make that quite a lot for him (or buy when im lazy) and he's totally fine with us not having meat in the house when we live together but he can get it when he goes out and gets lunch at work and so on.

I am a vegetarian and do not prepare meat in my house, though I have no problem with people or loved ones consuming meat around me. My BF is around a lot, and I generally end up cooking for him most days. He is a very large man, not fat, but easily 230 and not dieting. I am at a total loss what to feed him. I prepare food for him and myself. I make my normal portion size, usually a 500 calorie meal and then I just triple his portion for him of the same foods. Yet the man is still hungry! He even gets 2nd meals!
I just about threw my hands up and gave up today, when I saw his huge order of take out. 3 cheese burgers, french fries, milk shake and chicken nuggets. This was a large meal that day, but there is just no way I am ever going to be able to compete or feed someone that amount of calories on a vegetarian diet
-frustrated and at a loss here

Why are you feeding a grown man? You are not responsible for his stomach and/or what he chooses to put in it. Cook for the both of you, if you must, then let him take care of his extra food.

I keep coming back to this… I am kinda surprised to be honest by all the don't feed him posts. I have never had a friend or family over, much less a lover, and not offered them food or drink especially during meal time. It is part of being a host{ess} and nothing to do with being susie homemaker or grown assed woman with job or grown assed man who needs to forage for himself. My kids offer their friends dinner if they are still around while I start fixing it and they are young so this definitely isn't a generational shift. Seriously you are hanging with some friends and it gets to be dinner time and it is fend for yourself these days?

I have too many friends that are vegan or gluten free or what not who have a hard time at dinner parties finding something acceptable to eat. I get that hosts are not expected to cater to all your dietary needs but offering something they might like is good. It seems she is offering food her bf likes but is concerned he isn't getting enough calories/fat without the meat and wants some strategies to up those factors. I agree that she shouldn't have to go out and buy a side of beef for him but having some seasoned nuts or something as an appetizer to up the protein and fat isn't such a horrific chore.

My sister comes and visits for a weekend and I make darned sure there are things she likes. Same with my mother~ red wine and coffee {neither of which I drink}. My daughters invite friends I buy some soda and chips for them to offer. Seriously do you guys expect a guest to bring their own drinks and food to your house?

After reading the post and replies, I'm still not sure what the problem is.

Are you frustrated with him for eating so damn much, or are you frustrated with yourself because your cooking never seems to satisfy him? Your first post seems to imply that he is the problem (and maybe that he's setting himself up for getting fat by eating too much), but your later answers (more fat, more salt) implies that it's your cooking.

If it's the first, but he's not gaining weight, then you just need to recognize that some people need far more food than others, depending on their height, body composition, and activity level. While it might not seem fair that he can eat so much and you have to count calories, the world isn't always fair. I have friends who eat like birds, and friends who will take seconds or even thirds. When they're over for dinner, I just accept that what I consider to be a normal serving isn't what everyone else thinks.

If it is the second, then look into adding more fat in your cooking. If you want to avoid much extra fat yourself, but you don't want to make two versions of things, give him side dishes, like a bowl of peanuts or cashews, some olives, a bowl of olive oil with bread for dipping, etc.

My BF and I are in the same situation, and honestly everyone just compromises a little. He eats more veggie-based meals than he would otherwise, and I'm happy having some scrambled eggs + whatever sides he makes if he really wants a steak.

We make a lot of meals where it's easy to add/subtract the meat, like fried rice so he can add cubed chicken to his portion and I can add extra eggs to mine, or we'll have the same pasta sauce, salad and bread, but he'll make chicken tortellini and I'll make cheese tortellini. I'll keep breakfast sausage in my freezer because he really likes it and it's easy to add a side of sausage to his meal so he fills up but I don't add extra calories to mine.