I really need help with my husband?

well my husband has been so rude to me since we got married . he has changed so much . he alwyas yells at me for stupid things like bothering him or he doesnt want me to spend time with my kids from a previous marriage. he always wants to take them home as soon as i get them . we only have 1 car but we both pay for it but only he is allowed to use it . and says its his and i am ruining it when i drive it. es become more addicted to porn lately and shows no interest or affection to me . he always calls me names now and says hes joking after . i try to tlk to him but everytime i do he says omg again?? nd just gets frusterated . he always says he cant take this **** anymore then 1 hour later hes fine. i really dont know what to do anymore. its like he doesnt love me anymore and doesnt care . he doesnt even think hes doing anything wrong. and now he goes to work early just to get away from me. i am a great wife i give him everything. and i think thats the problem . that hes taking advantage now . i really am lost with this. and now this week we are both on vacaton from wrk together and he told me to leave him alone he doesnt want to spend it with me . so i dont know anymore. please help .