my darling how horrible for you. you say you need to be stronger, look, make no mistake-you ARE strong. to have dealt with your little son on your own, let alone with his screaming etc, that IS strong.
A couple of things to say at first-do you really think that if this selfish selfish idiot was around you would be supported?? from the sounds of it you are well rid for now as babies and drunken irresponsible tw*ts don't mix.
the other thing is-and no doubt people tell you this all the time, but it will get easier with ds. i've found with my two, and talking to others, that the first 3 months can be the hardest, most mind numbing and isolating, esp given other circumstances like this.
i know people say that some/a lot of "men" cannot handle it when the babe is born. sometimes i roll my eyes at that remark, even though i shouldn't as my dp was a textbook case. he was a total and utter arsehole when ds born over 3 yrs ago. i chucked him out, let him back, did it again, then he went, then came back and so on ad bloody nauseum.
utterly utterly exhausting. try your damnedest not to get caught in that cycle or you will be even more knackered and despondent.
i hear what you're saying about loving him. question this!! he would need to have a total conversion to be a proper father and partner from the sounds of it. this involves being in it for the long haul, going through some horrible shit and (hopefully) coming out the other side. we did manage it but the repercussions of it still echo around us a bit.
but back in the real world-have you got help, what do your friends think? can one of them(childless maybe or with grown up kids) come round and stay a couple of nights to help? a mate of mine did this for me and god it helped, i'll never ever forget it.
keep talking on here. remember, you're not mad and irrational-you have just had a baby x