What a best time for a girl to make friends with one boy ?
when should teen girls find one good peer boy and make friends with him ?
Girls should be around guys as friends their whole life, otherwise they could end up really shy or awkward when trying to talk to boys when they are older and want/ have a boyfriend
Whenever they want
It all depends on what you want and when you want to settle for a relationship. However, the time maybe delayed especially when you do not establish someone to match the qualities you are looking for in a partner.
When they feel comfortable