i dont even know where to start!
the past week me and DP or should i say XDP have been having some issues.

He is 24 years old and is still in "im 18 and single mode" he goes out from friday night till sunday night EVERY weekend gets absolutly blind and stumbles home about 530am sleeps ALL day then does it again and struggles at work for the rest of the week!

Up until now i havent really said much besides giving the old silent treatment etc... anyway he went out last saturday night till about 5am came home drunk woke up hungover, wow what a great start to valentines day! anyway so me and DP decided for valentines day we would enjoy all our couple and single friends over for a bbq lunch/dinner, so DP takes this oppertunity to get on the beers no were not talking 2 or 4 were talking nearly half a carton! anyway while im cleaning clearing the mess from all the drunks i hear DP orginizing to go hit up the clubs! forgets its valentines day and that im his fiancee and that i might of wanted him home!
anyway his out till again 5am, he gets home has monday off fine, i carry on with my normal duties untill he starts telling me about this chick asking him to come home with her, apparently his response was sorry i have a fiancee and she replys "oh dw she will never find out"
i just seen red! im sick and tired of him going out p!ssing our money up the wall! im sick of feeling like im a single parent on the weekend i didnt for sure didnt make these children on my own so why should i raise them alone! blah blah blah
anyway his reply to me was that his not inlove with me anymore that ever since ive had DS ive changed to a total different person im not fun, im boring etc,etc.
WTF im exactly the same person except unlike him my prioritys in life have changed!

Anyway last night we had another arguement so bad that DP walked out, and didnt come home, i litrally called him 60 times to get NO answer or reply to my texts. i continued trying this morning and got myself soo worked up the only way i could think of stopping doing this to myself was to smash my phone on the tiles (to which it broke which is what i wanted) anyway so i go onto FB about lunch time to see his status update being how his "being a VIP at a surf comp with free beers" so he can go on FB but cant pick up any of my phone calls FFS im pregnant with his child im the mother of his SON how do i not deserve to know where he is!
anyway i keep looking to find his changed his relationship status to single!

i dont know what to do! how do i deal with this? im so lost.
how do i sleep tonight knowing his never coming home to me.
how do i look at my DS when his a spitting image of XDP!!
i just want to curl up into a ball and hide.
im sorry if this doesnt make sense... and i dont really know what im asking for writing this... i guess i just need some help on dealing with a breakup that has so much involved (eg, a house, a kid and a pregnancy!) how could he be so selfish!!

TIA