When a guy is in a relationship, why is it that the guy seems to be less romantic then the girl?

im in a relationship right now with my boyfriend, and he just doesnt seem to love me as much as i do. and care for me as much as i do. he even told me that he isnt that romantic type of guy. but cmon, he can at least give me kisses, hugs, and say ily all the time. thats just being sweet. i want to know what’s in a guys head when hes with the girlfriend, or when he has a girlfriend in general. because i know that all i think bout is him and how bad i want to be with him. and when i am with him, i just want to kiss him all the time. its a totally different story for him. were totall opposites. and i want to know why he isn’t the way i am. is it just a guy thing? like i want to know everything about a guy, thats in his mind, like everything! PLEASE HELP.