The answers is no, if he wasn't divorced,yes,because the catholic church recognises the orthodox church as valid since they were one church before.However if he is divorced he is not allowed in either catholic or orthodox.
A Catholic can marry any non- Catholic, and it is recognized as a sacrament in the Catholic church. Only when the individual has been previously married there is an issue. In which case that individual must have their previous marriage annuled. The Catholic church permits Catholics to marry in the Orthodox church and it is a sacrament. I have spoken to Catholic priests and Catholic Bishops and they do not see a problem with a Greek annulment, as being an impediment. If that individual did not have their marriage previously annulled than it would be an issue.
No, an Orthodox person cannot marry in a catholic church at all. The Orthodox church only allows this type of marriage (as an exception/by dispensation) to take place in an Orthodox church.
Roman Catholic AnswersAs Christians we believe that marriage is for life. We believe this as God created us, and this is how He made us. Thus a divorced person, if they have been validly married cannot marry again while that spouse is still alive. If in your question, you are referring to a "divorced Ukranian Orthodox man" who is still validly married in the eyes of the Church, then, no, you would not be able to marry a Catholic woman. You may speak to a priest about this, if there is some question as to the validity of your marriage, it might be annulled (declared that no sacramental marriage actually existed), then you would be free to marry a Catholic woman.
I'm not sure about the Greek Orthodox's Church perspective, but the divorced Roman Catholic woman is still technically in the sacrament of marriage with the man, until it is nullified by the Catholic Church.
No. Not unless the Orthodox man is able to obtain an annulment.
Roman Catholic AnswerThe Catholic would need to apply to his priest for an annulment, I don't know what the regulations are for the Orthodox.
Generally, priests may not marry. However, if a married priest from the Anglican or Orthodox Church decides to become a Catholic priest, he can remain married. However, divorce is neither recognized nor permitted by the Catholic Church. Divorce is a civil matter. If a Catholic priest were married (a situation that happens, for example, in very few non-Latin rite churches or in the case where a married Anglican priest converts to the Catholic Church and wants to be a Catholic priest), it would be the same for him. I would hope it would not happen, but if he and his wife divorced, it would be a civil matter as well. Unless his marriage were annulled (recognized as invalid from the beginning), the Church would still consider him bound by the sacrament of Matrimony, because contracts (civil marriage) are the domain of the state, and sacraments are the domain of the Church.
If the Catholic woman marries a Orthodox man without a dispensation from the Church the marriage is ipso facto invalid, thus no annulment process needs to be begun - the marriage is plainly invalid.
Catholics do not recognize non-catholic marriages as blessed or sacramental. Which sounds bad, but no other churches besides the Anglicans, Catholics, and Orthodox consider marriage a sacrament anyway.
Answer As this is not an usual situation, there is no common rule for it as there cannot be a rule for every individual situation. This means, your local priest are to be contacted since it is their discretion (or the Bishop's).
There is an Orthodox Church and a Catholic Church. There is no Catholic Orthodox Church.
they have to get divorced after 10 years without children because their religion believes that they should be together for re-creation and not just lust
If you are asking, "Do Greek Orthodox people marry Catholic people?" the answer would have to be, "Sometimes they do." Probably the easiest to recall instance of a Greek Orthodox person marrying a Roman Catholic person is the marriage of Jacqueline Bouvier Kennedy to Aristotle Onassis.
The Catholic Church allows marriage between Catholics and non-Catholics. The interfaith couple will have to + Get permission from the bishop + Take a pre-marriage course + Promise to baptize and educate their children in the Catholic Church.