The father of my 2 kids left me when I told him I was pregnant with our daughter. But now he wants to come back in the picture.

He told me if I didn’t let him, he would go to court to get custody to, but the only reason I won’t let him see the kids is because he hasn’t done not one thing for them since they have been in the world. I am 18 and I’m raising two young kids on my own with no help from him and now he wants to come back in the picture after not doing anything for the last 2 years. My son is 2 and my daughter is 11 months.

I just need help figuring out what I should do: let him see the kids even though he has not done one thing or risk going to court and he gets shared custody.