The only way to end the community in Texas is by divorce, there is no legal separation. Unfortunately, there are many abandoned spouses who for religious or other reasons do not want a divorce. Practically speaking, I see no option but to report only their own income. Legally, they remain liable for unpaid tax on their spouse's income, but they can claim innocent spouse relief if the IRS tries to collect. What would you do?
As for the OP, I suspect as others have said, that as long as all income gets reported, it won't get flagged by the IRS. However, if you comply, you are knowingly preparing an incorrect return. Texas accepts prenups (and postnups - a signed spousal agreement) to reallocate community property - I would want them prepared by a lawyer.