Texas does not have alimony, so cohabitation is irrelevant. Very occasionally, temporary spousal maintenance will be awarded, which is limited in time to allow the ex-spouse to gain education or experience necessary to make ends meet. Cohabitation would not affect spousal maintenance.
You'll have to check Texas law.
The laws on cohabitation are well established in Pennsylvania. Lawyers advise clients that if they cohabit after they have been divorced they will most likely not receive alimony. 23 Pa.C.S.A. § 3706 provides that, "no Petitioner is entitled to receive an award of alimony where the Petitioner, subsequent to the divorce pursuant to which alimony is being sought, has entered into cohabitation with a person of the opposite sex who is not a member of the family of the Petitioner within the degrees of consanguinity." What determines whether parties are cohabitating? The courts have defined cohabitation as "two persons of the opposite sex resid[ing] together in manner of husband and wife, mutually assuming those rights and duties usually attendant upon the marriage relationship. Cohabitation may be shown by evidence of financial, social and sexual interdependence, by a sharing of the same residence, and by other means." Miller v. Miller, 508 A.2d 550, (1986).
If that is a provision of Ohio law, you may need a PI to gather evidence, but tax returns from the same address often works. Subpoena them.
It is illegal everywhere
In Texas there is no law specific to cracked windshield for passanger cars. However, some officers streath is and will write for obstructed view.
Cohabitation can be a factor in divorce in Illinois. Cohabitation agreements are not an option for unmarried couples in Illinois, and are not legally recognized unless one party is going through a divorce, in which case dire consequences can occur.
Most states that allow for cohabitation to become a common law marriage, say that a marriage does not become common law until after 7 years. Some states do not recognize same sex common law marriages, though.
Virendra Kumar has written: 'Alimony and maintenance in the light of the changing concept of marriage and divorce' -- subject(s): Alimony, Alimony (Hindu law), Separate maintenance, Separate maintenance (Hindu law)
used to be one year - proof of 'cohabitation' needed, rent receipts, utilities, etc. - you have to be living with the person, not just in a relationship to be considered common law.
Until you are an adult, Texas law says the parents are responsible for the minor and where they live. Seventeen is not the same age as eighteen.
Six months of continuous cohabitation.
I doubt there is an actual law regarding this, but the school has every right to have and enforce this rule.