Actually, it's not entirely awkward to talk about, because Li Lingling's attitude towards Chen An has improved somewhat recently. If at this moment Li Lingling were to notice that Chen An was still in contact with another woman, it indeed would be hard to explain to her.
If Chen An didn't explain, based on his understanding of Li Lingling, she would certainly feel resistant towards him again. The relationship, which had not easily made some progress, would become tense once more.
However, if he completely disregarded Li Lingling's feelings, the current Chen An almost wished he could stuff his entire self down Su Meng's throat, letting the person on the other end hear what he was doing. Just the thought was somewhat exhilarating.
Chen An had always enjoyed seeking thrills in this respect, but he knew well enough that Li Lingling would never cooperate with such a thing, so he simply gave up.