@HYBRID_BEING she gets taunted because of her pride but still she is an intelligent woman. Also i think she said that there is sth in the MC that annoys her as hell and doesn't let her refuse.
Also i believe there was a time limit, he even said that resting for 1 minute should be ok, because he was sure he gonna get this one anyway looking at her reaction.
I hope for some sex scenes next chapter but probably we gonna need to wait 1 more for that, next chapter might be him using his fingers/tongue to make her come 2nd time and after that he gonna take her 3rd time by fucking her. Also im still waiting for the date with Nayeon sister, that girl smile was so sweet.