Y'all know that man would've done it but he's afraid, imagine being that afraid that you can't take the initiative.
I mean, at least he's not like other harem characters, he's not so clueless, he's just so careful because of his trauma.
As much as I hate to see a childhood friend get shafted, I have to agree with MC-san. He knows his environment and the dangers it poses to him. He is wise to friendzone any woman trying to be close to him.