I've never owed money for taxes. This year I owe $1,500. I haven't changed any deductions. I should not owe anything. Help please?? I don't pay anything on my own

You have to compare this year with last year’s return LINE BY LINE and see what changed. Maybe you’ll spot something you left out or entered wrong. Common things are leaving the decimal point out or typing a comma for a decimal point, or typing an extra digit. Getting the wrong taxable amount on a 1099R entry or entering the 1099R wrong and getting hit with a penalty. Missing the qualified dividends in 1099-DIV box 2a. I could go on and on.

Do you have any self employment income or a 1099NEC? You might owe some other tax on it.

Do you owe this for your federal return?  

Double check your entries.  Be sure that you did not misplace a decimal point or reverse numbers.  

If the numbers are correct, then you can compare last years return to this years return going line by line to see where the difference is. 

Unless your partner and you make the exact same amount and have the exact same amount withheld, and everything else the same, your refunds or amounts owed would not be the same.