I don't know, maybe it's not likely to have friendships at that stage with no sexual feelings whatsoever, but there's also a big gray area where you can like so

I don't know, maybe it's not likely to have friendships at that stage with no sexual feelings whatsoever, but there's also a big gray area where you can like someone enough to be friends, and maybe be a bit attracted to them, but really aren't that interested in taking it further, for any number of reasons. Maybe one of the two of you is already in a relationship, maybe you anticipate too much emotional complexity, maybe you're already having enough sex and just don't feel motivated. Of course, there's always a chance that if two people like this end up in the right situation, something could happen, but it's far from a certainty. In my experience this kind of friendship is actually very common, especially among large mixed gender friend groups. The dynamic only ever seems to frustrate the guys who aren't getting any--but in those cases it's really just the frustration of not getting any being projected into the friendships. If the guy finds a girlfriend or whatever then the tension disappears.