Tax Question...I owe the IRS?

I live in florida...after speaking with an IRS agent in collections..she said that my current boyfriend would have to pay for my taxes. Is this correct...just seems odd....we are not engaged and she is threatning to take his vehicle for my delq taxes. I have offered to set up an installment plan...but she stated she would have to run that by her manager. Any feedback would be hlpful.