I think the kissing scenes that look awkward are a very good depiction of what its like to have your first kiss.. and the way they do it is full of pure emotions and puppy love
About ellie’s mom i think its pretty “normal” sometimes for parents to admire good looking children, i mean some boomers will compliment you for being good looking. Idk about u but its common in asia for teenagers to be asked wether we have a bf/gf for being good looking and that we’ve grown
You probably missed seeing the mom literally drooling at the thought of walking in on a teen guy alone in the guest room. Before then, she was also depicted caking on makeup to appeal to him. It's all played for comedy, but it's still disturbing. As for the kissing, they've done it so many times by the latter chapters, I don't think it's still meant to depict an awkward first kiss.
Oh damn that is weird
My only criticism art-wise is that the kissing scenes look awkward, like the mangaka can't seem to depict kissing properly (noticed this in their other work too). I also wish Ellie's mom wasn't such a pedo perv. Imagine if it was a dad character drooling over a girlfriend his teen son brought home. This was just as disgusting.