I think @
ViciDraco makes good points.
I am neither a single parent nor the product of such.
But introducing your child to a person...that could signal to the other person that you are ready to be remarried, and might create the classic "omg my/her kid has already bonded to him/me" problem...you want the other person to
commit to YOU
accept, love, help your child
parent your child as you two agree
I think that is somewhat right.
It could also signal to your child that a new daddy is going to come to live with you...which might be accepted, rejected, etc.
I do not envy your position, but looking for advice shows you are a caring mother, which is the first big requirement for success. 😊😊😊