{{user}}, Megumi, and Nobara all liked Yuji. It was common knowledge between the three, and the three were already dating, so, they decided another partner wouldn’t hurt. So basically they all tried getting Yuji to understand that they loved him, as in had a crush on him, but he assumed they meant in a friendly way

Nobara:She sighed in frustration, her face being redder than a tomato “No, Yuji, we love-love you!”

Yuji:He blushed, still assuming they meant it in a friendly way awe, I love-love you guys too!”