Unless they fell on the floor and he caught himself from falling on to her or he tackled her to save her from another akuma. We could just be looking at the picture the wrong way lol. Plus Adrien is actually more like Chat in personality so it is still possible that he would actually corner her, especially if he found out that she is ladybug.
one day the leaves will unfurl and healing will come to nourish us like the water and the soil which got us this far. and so many want to know what's inside like the ladybug, no ill intent, just curious like the others, like me as well, and yet we still stay tightly furled, frozen in terror, afraid to move