Can I claim Head of Household with an unemployed roommate as my dependent?

Hello. So... I have a bit of a unique living situation and have been unable to find any solid answers online for this.

I have an unemployed room-mate (no biological relation to me) who has lived with me the entire 2024 calendar year. He has had a couple on and off jobs but his income has definitely not exceeded $5000 in income for the 2024 calendar year. He receives no government assistance like food stamps or unemployment (although is on Medicaid.) I have basically paid for all his and mine living expenses and utilities and most of the food (there were a couple exceptions when he had those jobs, but for the entire year combined I definitely paid >95% of living expenses for both of us and >90% of all food and household expenses for both of us.) If it makes a difference, he has seizures and can't drive because of it, so he does rely on me to get him to place to place.

I know to claim Head of Household status I need to meet the following requirements

• Pay for more than half of the expenses for a qualifying household
• Be considered unmarried on the last day of the tax year (which I am)
• Have a qualifying child or dependent

Now... my question comes in as whether I can claim my room-mate as a dependent or not. According to the IRS, the requirements for an individual to be a dependent are as follows:

• A dependent must be a U.S. citizen, resident alien or national or a resident of Canada or Mexico (He is)
• A person can't be claimed as a dependent on more than one tax return, with rare exceptions (He isn't)
• A dependent can't claim a dependent on their own tax return (He can't)
• You can't claim your spouse as a dependent if you file jointly (Not applicable)
• A dependent must be a qualifying child or qualifying relative

The requirements for a qualifying "relative" are as follows

• Isn't your qualifying child or the qualifying child of any other taxpayer
• Lives with you all year as a member of your household
• Has gross income under $5,050
• Gets more than half their financial support from you

All of the following above apply, but they are not a "relative" since they are not biologically related to me which is what was throwing me off. Would I be able to claim my roommate as my dependent and file under Head of Household status given my current situation, or no.

Thank You to anyone in advance for their help with this! 😀