First off, I love your user name, my name for 24 years was Meagan Maye!!...LOL Now I am married but people still use my maiden name all the time....hehehehe, so anyways if this guy is 43 and has the maturity of a 12 year old boy I would not let him have the baby alone at all until he has been through some parenting classes, he can get free classes at a local Pregnancy Resource Center and even earn, "baby bucks" for baby needs like diapers...win win situation there, 1-800-395-HELP, this is a number to call to find a local center near you...If I were you I would stop "hooking up" all together, you have obviously given him your heart and he is tugging on it and that is wrong, right now you cannot get pregnant because you are pregnant but once baby is born if you keep hooking up with him you could get pregnant again and then things could get really messy, I think you are going to be a great mommy....I would consider not putting him on the birth certificate and working out a private child support agreement so that if he were to run with baby he would not have the legal right (him not being on the certificate) and if he is immature enough to not have a clue on how to raise a child (even parents who hate each other know that you have to work together for the benefit of the child, consistency etc) then he may not catch that little detail and with him being 43 he should be stable enough to out of pocket help you with child support....I have 3 kids with 3 dads, 2 of them were out of wedlock, at any time they could show up and take my kids and disappear and legally I could do nothing because they are on the birth certificate, we were never married therefore we were never divorced and have nothing in writing....it might be a good idea to go in together to a Pregnancy Resource Center for counseling to get advice on how you two should work this out but for sure make him prove that he will be a good parent before you give him alone time...also guard your heart, remember to put you and baby before your feelings for him, sounds like he is not the kind of guy who is in to solid commitment and you deserve better....Love Meg