i Told the girl i like that my hairs falling out (i acted confident while telling her) and I'm going to go sly soon to overcome it and she was OK with it though said she will miss my hair and that it might suit me if i build my arm muscles a bit.
That's a bit like you saying to her "her hairstyle would suit her more if she changed her breast size". It will probably work out with her but
if it doesn't then console yourself with this image:
Flash forward to 30 years in the future. The girl in question has changed somewhat in a most unappealing way, living in a hot, sweaty trailer [here we call them caravans] with a fag hanging out of her mouth and a bottle of gin in the other. Her current boyfriend is sitting across from her and has long, greasy hair and is wearing a stained blue singlet [here we call them wife-beaters].
She is screaming at him in a slightly slurred voice "You won't even trim that filthy hair when I ask you to and I could have married a guy who was willing to shave his head for me."
The boyfriend will reply "Well, why didn't you?"
She will say "Because I was too young and silly -- I didn't have the life experience. But make no mistake I am passing on my newly realized bald insights to all my children and girlfriends."
This will doubtlessly lead to, through the power of Darwin's natural selection, all men shaving their heads and eventually all men being naturally bald [as only bald men will be selected for breeding].
In the interests of full disclosure I should say that all my women have left me and I am living on my own with my chihuahua named Chia who is much easier to get along with than any woman I've ever lived with. It
might be wise not to take too much notice of me.