My boyfriend tells me to say his name and say I'm his little slut

So this is obv a kink or something but idk why my BF loves doing this but in the middle of sex he will stop whisper in my ear making me either scream his name or say I'm his little slut like i like it , but is that normal he also loves choking me and other things . I'm just new to sex and he's the only guy I've been with so I'm just curious if that normal to see in a guy ?