Do I have to re

What is your real question? You've asked several versions of the same question with varying degrees of details. If your question hasn't been answered yet, it's because you haven't asked a straight forward question.

Is your question:

1. Will my parents find out I’m living with my boyfriend?
2. Will my parents not meet the support test because I have no rent receipts?
3. Will my parents not meet the support test because I didn’t really use the rent  money, they sent me, to pay rent?
4. Something else?

If you have no income, you do not file a tax return. The IRS isn't going to ask you, or anybody else with zero documented income, about your rent. If you parents claim you as a dependent, they may have to provide proof that they supported you, but that is so unlikely that it's not worth asking about.  Parents claiming students under age 24,  with no income or scholarships, are not asked to provide proof of support to the IRS. The parents accountant MIGHT need to know how much rent was paid and by whom, but not the IRS. So, it depends on who the "they" are in the question "if they will ask to see those payments" . The accountant doesn't need proof, he just needs to know the amount and whether it was your parent's money or someone else's.

There is not a rent deduction or credit on your Federal return.  If your state has anything for renters you will be prompted to enter your rent info when you complete your state return.  As far as I know, the states that have anything for rent are Arizona, California, Connecticut, Hawaii, Indiana, Iowa, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, New Jersey, Rhode Island, Vermont, and Wisconsin. I don't know if there are any others.

Note:  Just noticed that you have had several other lengthy posts regarding your rent and living situation.  It appears that you are very worried that your parents will discover that you are living with your boyfriend, and will somehow find out because of your rent.  It is unlikely that the rent situation will reveal your living situation to them, as you have been assured of by several other SuperUsers who have confined their remarks to the tax implications of your questions. I am going to go one step beyond-- You may want to spend some time with a counselor at your school to discuss the stress you are undergoing regarding the deception of your parents while you continue to accept their financial support