This is very common case, and there are plenty of posts on reddit where guys ask for advice. And most of those threads, as you guessed correctly, end up blaming the man for not liking chubby women.

Despite the fact that guy made a choice, he started dating this person when she was in a better shape. Now she gained weight, and she knew from day 1, thats a red flag for most men, who dated you when you were skinny in the beginning.

Yes, we all have ups and downs. And yes it can happen, but if there is no sign of female losing weight, but only talking about it, then i think its not fair to blame men.

So, how should guys address this issue?