A dad and a bio dad, what do I do

I was married to my ex-husband for 10 years we have one daughter together. Had been faithful to one man for 15 years. At the end of divorce went on a date. Ended up getting pregnant. The bio dad of my second child ghosted me. My ex-husband not wanting the divorce stepped up in every way possible. three years later bio dad comes back. Wants a relationship, but understands that ex is dad. Ex keeps both girls on Saturday. Isn't court order to pay, but pays for both of his girls. Even though we are not together he still wants to adopt youngest, "because that's his baby" < his words. He is a good dad and does good dad things.Bio was court order for paternity by the state. I got financial help from the state for a few months, cause of covid. So now the courts are after him and Bio just saw her for the first time last week. He is asking to see her again. And has given me $125. And wants to pay $50 a week. He left cause he was on drugs, the needle kind. He is no longer physical able to do any drugs, he has been clean since his 2nd heart attack a year ago. This also makes it hard to find a job that will insure him, so he is not making a lot.I don't like his personality and I don't know if its the resentment from being ghosted while pregnant or all the drugs.No one is getting with anyone my priorities are finishing school and taking care of my girls.I have no idea how to handle this any advice is welcome unless it's negative then you can talk to my exMIL she is always looking to dis me with someone. via /r/Parenting https://www.reddit.com/r/Parenting/comments/qkxh7y/a_dad_and_a_bio_dad_what_do_i_do/?utm_source=ifttt