The modern world pushes the whole "platonic friendship" thing, but really, all taken together, the phenomenon just leads to a lot of fornication and adultery that wouldn't have happened otherwise.
Nowadays you have terms like "work spouse" and "friends with benefits".
But even if there are no "benefits" (I'm using their term here), it serves to give both men AND women that "spouse's mind" that they're lacking. Men and women both need a helper of the opposite sex -- it's how God designed things. So by a woman having plenty of male friends (or vice-versa), she won't feel anything lacking in her life, and might delay marriage longer than usual.
I'm surprised Tele isn't more against this -- it certainly delays marriage for women as much as any college education.
Is it just me, or today (in the "modern world") are women more likely to do the "just friends" thing than guys? As a guy who was single for quite a while after reaching adulthood, I can attest that I never looked at a non-relative female (close to my age) as anything other than a potential marriage partner. There might have been a small % of women that were so repulsive to me that I wasn't attracted to them, but they were the exception.
If any of the girls in my class in (public) high school would have shown interest in me, I certainly would have been interested.
I think that's pretty normal for a single guy.
Every "friendship" with a woman you hope becomes "more". With sleezy modern guys, they hope to "get lucky". With traditional Catholic guys they hope it will turn into love and eventual marriage.
But men and women should never be alone, unless they are related or married. This applies to courtship, but it also applies to friendships. You can't play around with God's design and have no consequences. God made that attraction, it's very powerful, and it shouldn't be toyed with.
"Pride goeth before the fall." If you think "I'm strong enough" you've already half-lost.