Although An Li is also very pretty, Ye Feng's ultimate goal is Anna, so he can't accept An Li's feelings. Losing Anna because of An Li would be a little counterproductive.
"We're not suitable for each other; we're good friends, aren't we?" So, Ye Feng was very cautious and didn't agree to An Li's confession.
"You don't like me? Am I not pretty? Am I not charming?" Upon hearing Ye Feng's words, An Li froze and looked very confused.
"You're great, you're really great, but we're not suitable, you know?" Ye Feng had matters to deal with involving An Li, so he couldn't offend her too much and tried to speak nicely.
"How come we're not suitable? Oh, I get it, you like my sister and want to pursue her, don't you?" Upon hearing Ye Feng's words, An Li suddenly became anxious and started shouting loudly as if she thought of something.
"No, I do have a girlfriend." Although he truly wanted to pursue Anna, Ye Feng couldn't admit it, so he played the card of having a girlfriend.
