What is the ruling on a contracting party speaking by phone with his fiancée about sexual matters that may lead to ejaculation, knowing that this does not occur in their direct meetings?

A woman upon whom a marriage contract has been validly concluded is considered the wife of the man for whom the contract was made. Everything permissible between spouses becomes permissible for each of them with the other, while observing any condition or custom regarding the deferment of consummation. There is no religious prohibition against them speaking to each other about matters of intimacy, even if it leads to ejaculation. It is, however, advisable to proceed quickly with the completion of the marriage and consummation.