You or somebody need to tell him to amend and pay back anything he received by improperly claiming you.
You would be filing a false tax return if you said that you can be claimed and you cannot. In any event, the IRS is not stupid, when they match your SSN on the tax return you filed with the deductions he claimed, red flags will go up and you can both be audited. That usually takes a year or two after filing and by then the interest and penalties for back tax keep growing. He can pay back what he improperly claimed now or wait for a huge bill from the IRS in a year or two.
**Disclaimer: This post is for discussion purposes only and is NOT tax advice. The author takes no responsibility for the accuracy of any information in this post.**
