Advice please 😔

So honestly things with my bf have been good except we bicker a couple times a week, it’s over small stuff so it doesn’t get to me that much.

However, normally he leaves his phone with me when he goes to the bathroom or showers and let me play on it whenever. I never went through his messages or social media, i just play the games he has. But recently he’s been taking his phone with him everywhere and not even letting me touch it. Tonight he put his phone at the end of the bed by my feet while he was changing and i accidentally was about to kick it off so i put it on his side of the bed. He reached over me and grabbed it and put his phone on the table while he finished putting his shirt on and then got in bed next to me. He took me off find my friends too. He ignored me for like 9 hours yesterday and when i asked him what he did yesterday he just said “i don’t remember” when i know he went to his fraternity house because my friends were there.

and lately he’s been whining about how i “don’t love him like i used to” when i haven’t changed a thing.

Something is just off and i don’t know what to do.