is girls like boys to have muscle and does girl dislike fat

Generally speaking.....Yup~

the reason is, boys who have muscles are more healthier than fat guys~
if girls choose a guy to marry, a healthy guy must have priority~
if girls choose a guy to happy, a healthy guy must better than fat guys physiclly~

But in reality, u can see some fat guys have a lovely cute gf~

the reason is, some fats guys have characters that girls like most~
e.g. humor, passion, sympathy, rich, romance, considerate....etc~

of course, if guys have muscle, and all the above characters, is always the best~

Some girls like the boys who have muscle because they think that type of boy can protect them and they are more good looking. However, some does not. It depends on different girls' view.

If you are fat instead of muscular, I think it does not as good looking as a muscular one and the girl may not like it.