Is it permissible for girls to exchange messages of "love" among themselves, whether by phone or e-mail, out of friendship and kinship and not out of admiration?

There is no harm in exchanging words of love and admiration between girls, as long as it does not exceed customary boundaries and indicate the presence of abnormal relationships; due to the saying of the Prophet, peace and blessings be upon him: "If one of you loves his companion, let him go to his house and inform him that he loves him."