my issue in the beginning was that i rebelled AGAINST how the dynamic of our relationship had changed now that the baby was here. my girl and i were best friends, now that she's pregnant, she's gonna be a mother first. you will be second.
that, coupled with my infedilty (which im sure you'll handle better) created a very tough situation.
lastly, there will be days that the baby will frustrate you, which will cause you to frustrate her, which is gonna lead to tension.
ok so now what....
my son will be 2 in february; and i'm finally in a space i need to be. so check this out:
--accept that things are different. make sure she has what she needs, and try to make her situation and stress free as possible. the sex life is gonna be dry for a minute. dont let it die though.
--youre gonna have to find another outlet when she's too tired to joke, be intimate or whatever. buy a ps3, read, build a train set. she'll need her time.
--those days where baby is causing a rift. BREATHE. let things de-escalate. TRUST ME, a day will come when you guys are arguing and yelling and in the background a baby is screaming...those are the days where you gotta breathe and take a walk.
good luck, if you can make it to 24 months, the most stressful part will be over.