missing how it was..

me and my boyfriend have been together 3 years, he used to act so in love with me and so obsessed with me and now it’s just every so often. while i still feel the same as i did when i first met him and i treat him how i did when i first met him. i’m just sad it’s not the same anymore, i’ve brought up it not being the same and he gets mad at me and tells me “well sorry i’m not that person anymore, if you don’t want to be with me then leave…” i feel like i’m putting in more effort to show i’m in love than he is. don’t get me wrong i know he loves me and he treats me pretty good the majority of the time, i just wish he showed he was trying more. he also doesn’t put in the effort to make himself or his room nice when i come over anymore. his room has trash everywhere, he has rotten food and drinks left in there, he wears clothes that smell gross and are dirty half the time. i don’t care if he wears dirty clothes or his rooms messy, i care that he doesn’t care to look good for me. he used to not let me come over until his room was spotless and he looked good and he felt confident. is anyone else experiencing this or has before?