Friendship to me means that you have a special bond with a person that is not related to you in anyway. When you have a strong friendship it means that you can trust that person no matter what and that you have their back and they have yours. A real friend will never make fun of you, abandon you, or make you feel bad in anyway, instead they will help you solve things, help you out when the going gets tough, defend you, and never leave your side.
It may or may not be safe. Depending on how the he treats you and close of a connection you have it will be safe. NEVER be more than friends if your friendship doesn't really feel strong enough or if they don't treat you properly even though you have a strong friendship. Remember that if you want to be more then friends with a boy you know they must be honest, caring, and kind.
Friends are more people that you know are on your side and that will never give up to make you smile, laugh, and be happy. They will always comfort you when you need it. Fake friends will only use you, make fun of you without you noticing, and embarrass you.
(Hope this helped!!)