Your state tax refund received in 2019 is not taxable if you took the standard deduction.
Your boyfriend's tax refund might be taxable income if he itemized in 2018 and received a tax benefit from his state income tax withholdings. For example, in 2018 the standard deduction for single was $12,000. Suppose his total deductions, including mortgage, charity, and state taxes were $13,500. Then in 2019 he got a $2000 state tax refund. That means that he really only had $11,500 in deductions. But in that case, he would have taken the standard deduction of $12,000. So even though he got a $2000 refund, his tax benefit was $1500 so that is the amount that is taxable. (Other the other hand, if he had $14,000 of itemized deductions and got a $200 state tax refund, that refund is taxable in 2019 because his itemized deductions still would have been way more than the standard amount.)
It sounds like you need to answer "yes" that you itemized, but only your spouse's tax refund will be taxable now. If you want to go through all the calculations to be sure, only use the numbers from his single return in 2018.
