[quote="baloutang, post:1, topic:208975"]
however I need to understand the Church's position on an individual who is not faithful to their spouse. To what degree does the Church say that the line has been crossed is it with the actual physical act of infidelity or all the steps leading to it.
I'm not sure what you are looking for here. What, exactly, do you mean by "the Church's position" regarding faithfulness? You already know the answer to that: Adultery is a violation of the Sixth Commandment.
The Church doesn't have a "position" on "crossing" a line. The Church teaches fidelity in marriage is an essential property of marriage. I suggest reading the Catechism on the Sacrament of Marriage along with the sections on the Sixth and Ninth Commandments.
Your husband is not Catholic. Did he not intend faithfulness when you married? Why is he seeking out an escort service? You say he is from a different culture, is he also unbaptized/a non-Christian? I'm not getting it. Why would he suddenly be calling an escort? This didn't happen overnight.
Regarding what the Church says about maintaining a common life with an adulterer, here are the relevant canons in Canon Law:
Can. 1151 Spouses have the duty and right to preserve conjugal living unless a legitimate cause excuses them.
Can. 1152 §1. Although it is earnestly recommended that a spouse, moved by Christian charity and concerned for the good of the family, not refuse forgiveness to an adulterous partner and not disrupt conjugal life, nevertheless, if the spouse did not condone the fault of the other expressly or tacitly, the spouse has the right to sever conjugal living unless the spouse consented to the adultery, gave cause for it, or also committed adultery.
§2. Tacit condonation exists if the innocent spouse has had marital relations voluntarily with the other spouse after having become certain of the adultery. It is presumed, moreover, if the spouse observed conjugal living for six months and did not make recourse to the ecclesiastical or civil authority.
§3. If the innocent spouse has severed conjugal living voluntarily, the spouse is to introduce a cause for separation within six months to the competent ecclesiastical authority which, after having investigated all the circumstances, is to consider carefully whether the innocent spouse can be moved to forgive the fault and not to prolong the separation permanently.
Can. 1153 §1. If either of the spouses causes grave mental or physical danger to the other spouse or to the offspring or otherwise renders common life too diYcult, that spouse gives the other a legitimate cause for leaving, either by decree of the local ordinary or even on his or her own authority if there is danger in delay.
§2. In all cases, when the cause for the separation ceases, conjugal living must be restored unless ecclesiastical authority has established otherwise.
Can. 1154 After the separation of the spouses has taken place, the adequate support and education of the children must always be suitably provided.
Can. 1155 The innocent spouse laudably can readmit the other spouse to conjugal life; in this case the innocent spouse renounces the right to separate.