Do u think i should explain or let it go

So basically today when I was talking to my guy i told i like dosa..he was like "evlo dosa sapduva?"..I was like min 2 or max 3 sapduven... For that he was like i thought u eat 7-8dosas that pissed me but I didn't react

So from childhood i never overeat or eat unhealthy very often. But the problem is since birth I'm chubby like 58kg and 5.2ft..i have slow metabolism or smthg I think i never eat a lot due to it and I did try to workout like i have tried several times but due to lack of consistency i never reached my goal i have been tryna weightloss myself since 6th grade.. Tbh i was never bullied or smthg which is one good thing cuz last month i shared in same sub that the same guy s friends spoke about me like uk bodyshamed which was the first time it happened to me in my entire 18years this harsh except my mom so I was v hurt and i didn't eat for two except one meal but that diet made me lil tired and I had exam so I wasn't able to continue..

So i idk should l let my bf know to not make such comments to me or explain him that I don't gain weight due to my food and also i tryna lose weight so gimme some tips

(Btw I love muttapuffs but i eat it v rare like monthly that to only like till I was going to school it's been 4months I had one 🤧)