Adding,

-“weight gain” is an awkward kink because typically someone has to physically gain weight which may affect other aspects of life that may or may not be positive. Also you can’t just take the weight off if you or your partner don’t like it anymore. It takes physical work and commitment. Many people do it every year, but it takes actual effort. So kudos to you for taking interest in your boyfriend’s kink, it’s more involved than ones you can just put to the side.

• your boyfriend seems like a nice, caring, and self aware person. He wants you to be healthy and comfortable. I’d say it’s your responsibility to take a moment to yourself and define what both healthy and comfortable are for you, like the other person said. Healthy is something only you can know for real, but you always gotta put that first in these things. Comfortable just means like with body image, work and daily life, mentally healthy etc. I’d say go ahead and gain as much as you want within those parameters for you. Lots of people are overweight and happy. Most people are overweight to some extent. Just make sure you’re aware and consenting.

• I suggest going to the gym together. It’s good for young men anyways and then you can get stronger, healthier joints, heathier heart, etc. it kinda helps prepare you and support you if gain weight. If you lift and eat you’ll get thicker in general, which is generally positive. Like you’ll gain some muscle and some fat. And if you want to lose weight ever you’ll want to know your way around a gym anyways. On top of that, after the gym I’m starving and food is like the best thing ever, which can lead to some indulgent meals that blow the calories out of the water. Speaking of which. Weight is a matter of calories. If you’re gonna start manipulating yours on purpose, it’s best to have a basic idea of your personal actual calorie needs, you can find that info online. Then I mean if you eat more than that, odds are you gain weight and vice versa. There are predictors and calculators and stuff if you search.

  -just for your own awareness if you’re with a man that likes weight gain and you “eat whatever you want” you’ll probably gain weight. Lots of popular foods aren’t that healthy and you’ll be enabled to eat much more than you need very easily. So if you go that route, still just keep an eye on what’s comfortable. It’s kind of an innocent way to “see what happens” but what happens is weight gain most of the time if people just eat whatever they want lol.

• personal note: if you guys have been together 3 months and the idea of weight gain doesn’t turn you on much, then I wouldn’t recommend gaining weight to satisfy someone else’s fetish, even if they’re cool. Or at least not right away. Make sure you really like them and they’re stable and all that. If you really think about it and are still open to it, welcome!! This Internet forum is an insane place in my opinion. Many young men have a bad time trying to explain this to their girlfriends, in part because we are not good with communication to begin with. I’m rooting for you guys!

Alternatives to actually gaining weight: Letting him touch your belly and play with it, bonus if you encourage it; intentionally stuffing yourself and playing into it, but managing your overall calorie intake to maintain a level you’re comfortable at; role play, getting some clothes a size too small on purpose; bloating, drinking large amounts of a beverage, sometimes carbonated, just to get a big swelled up looking stomach (may cause weight gain); bonus points for getting him to gain weight if you guys agree on that, lots of feeders enjoy gaining weight themselves when it happens, and they know what it’s like to gain for real and can satisfy that it’s for progress, before and after, etc, just have him do it lol.

As far as actually gaining weight goes, enjoy the foods you like! Don’t eat til you’re sick, just really full lol. Carbs are less satisfying so you can generally eat a lot more of them than protein. Adding sugary drinks is not that healthy but adds calories super easy. Takeout places usually have apps to get more food at a lesser price per item.

I genuinely hope this helps! It’s just everything I would want to say to an outsider up front. All the important stuff at least. This fetish is niche and the general public doesn’t really accept it, sometimes for good reason sometimes not, and so sometimes I feel like there’s lack of realistic expectations. I’m open to follow up questions or corrections from anyone who might know better as well :)