I just don't understand?

Ok...um so many thoughts go threw ma head wen im not with him and no thoughts go threw my head wen i am with him. and i know i love him so much that my mind goes blank but why. why is is it that i have so many things i want to get off my chest but have a hard time doing it wen i hear his voive or im in front of his face? And i wanted to know is it okay if you and your man don't argue. Becaz me and my man never argue and most people say it's healthy in a realationship to argue but we don't is that wrong?

Like when i said that i mean i acn talk to him about things but it's just like wen i want to yell or get on him about something i can't. its like he says something to me and i can't concentrate. its a good feeling though. and yes i love him soooo much he has put me where i am. but i don't think its a warning sign. do you think it's a warning sign that we dont argue?