Your BF cannot claim you as his dependent if you made over $4200 in 2019. But he could claim the son you have together as his dependent since the child is also his--and he could file as HOH. (Neither you nor your daughter qualify BF to file as HOH, but your son does).
You could file Single and claim your daughter as a dependent in order to get EIC and some of the refundable child tax credit. (You would get somewhere between $400 -- $500 for CTC depending on how much you actually earned from working.)
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
