After he kissed her, once again, Lila didn't speak awhile to regain her breath. Sometimes she wondered if she was really a simple person. Whenever Haruka would kiss her, even if it's in an inappropriate location, Lila could not say no to him. Whenever he complimented her, she feels so happy, and it helps motivate her further. Whenever he comes home, she's overjoyed. The last one is simply because of her unusual insecurity. Unlike Haruka, her insecurity isn't apparent, because she is used to dealing with it by now.
At the beginning of her relationship with Kiryu, many people kept sending her death threats left and right. So it's not like she isn't used to this.
"This is a close enough position to kiss, you know?" To prove his point, Haruka traces her lips with his thumb.
"Dummy, don't destroy the moment," but then again they did just have a heavy make-out session?
"But, you like kissing, don't you Lila?"