any advice

When i have stuff to talk about and i try to voice my feelings to my fiance he gets into defense mode automatically i usally never even get to finish what was bothering me . I feel my options with him are either be quiet and keep it to myself or talk about it and let him turn it to an argument or walk off. We live in the same house and i literally havent said much for almost 3 days just because i got alot on my mind that idk how to push it to the side and pretend im ok so im just not saying anything at all and hes not bothered , hell say hey bae, by bae , see yu later, yu hungry all while not being bothered that i looked so depressed and havent said a word because he said he didnt want to hear it like he always does. I cant keep going to my mom about problems i should be talking to him about I cant keep communicating like this ive brought it up so many times and im nervous that ill have to end our relationship over something so little.