To Luo Susu, a girlfriend is just a title.
Not agreeing to hold hands, nor to kiss, you could say she only agrees to the title of girlfriend, but hasn't committed to anything else.
So, what harm is there in being Lin Xi's girlfriend?
Besides, with her talent, she learns things extremely quickly.
Once she's learned everything, break up!
This doesn't cause her any psychological pressure; agreeing to be his girlfriend is already the biggest stroke of luck for him in this lifetime.
At worst, she'll kindly offer him some breakup compensation.
Luo Susu thought about it this way, but realized Lin Xi didn't look as delighted as she imagined, rather he seemed hesitant.
For something so good, what could he be hesitant about?
The idea of him being unwilling never crossed Luo Susu's mind.
"Be my girlfriend?" Lin Xi asked with a bit of doubt.
"Yes," Luo Susu replied.
Upon hearing this, Lin Xi's expression turned peculiar, but after a brief hesitation, he said, "I have no objections."
