I do agree Cassis, that there can be a sexual attraction on one side and not the other.
A few years ago that actually happened to me. ...he was attracted to me sexually but I wasn't, so I went to break it off, however he begged me to remain friends.
As I felt sorry for him , I agreed.
However, it became a little "dark",
He led people to believe it was an intimate relationship, which it wasn't.
He enjoyed the idea of being with me, so he fabricated the whole relationship as he went along.
It got scary in the end.
He "stalked" my family on Facebook...I'm not even on Facebook, but over time you talk about your family, etc by name, and over the months ( which went into about 18)
he gathered information on them.
The police had to get involved in the end, because he messaged my daughter and all hell broke loose.
That's why I'm very cautious now.
I don't want the big love affair etc, I'm not desperate or needy.
Some people feel they must have someone in their lives, rather than be on their own....I'm not in that category.
Platonic is fine by me.