Is he flirting or just feeding his ego when he responds like this?

anytime he flirts its subtle and always in dms. i tend to flirt in call which i didn't really mind. but now it sounds like he’s stroking his ego a bit. if i say something like oh you’re handsome. he goes “oh marie marie marie.” or “interesting”. or he’ll say “you’re very obvious” almost teasing. by obvious he’s saying my feelings or how i feel for him. and sometimes he’ll say “oh you sent that fast” if i reply back. i’m getting impression that he thinks of himself highly or like im so obsessed girl in love with him. i could be wrong but that’s how it kinda feels. he doesn’t do it aggressively or rude but. has anyone had a similar experience? anyone been that guy or on the other side of this

Is he flirting or just feeding his ego when he responds like this?
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