depends on your body type and age actually. five years ago i see 4kg as nothing, but now? i feel that's a lot especially if you don't exercise
I mean I know how age and height affect that but considering he's a 170cm middle aged man I don't think it can change much on his body type (although the middle aged part of it does mean he should probably work on exercising, but alas, I'm more so talking abt how 4kg alone doesn't make much of a difference)
he probably feel like its a lot since he's a middle aged man and dating a guy much younger than him – he doesn't see himself as attractive lover so he think gaining weight, having flabby middle aged stomach is less attractive too (so more like insecurity i think?) especially when his lover starting pinching his love handle lmao (i know 4kg doesn't make much difference but i get the same reaction as him whenever i saw my face getting bigger )
Why is he acting like 4 kilos is a lot...?