^^^ That's good advice.
Date multiple women, always. I've been doing it so long now it's no longer even interesting. But I don't have the issue of "developing emotions" for some chick. Or at least they're somewhat muted. Or perhaps they're not but I have them for several women at once so it's no biggie. Not sure.
Look. Right now I have 2 long-term girlfriends. I have one ex I broke up with in December but still bang every few weeks. I have another chick I've gone out with 3 times but didn't bang because.. well.. not sure, I just didn't care. Then there's another ex I do coke with and bang every few weeks even though she's got a boyfriend. Then there's another chick I dated a long time ago but not interested in banging now and we just hang out and shoot the sh*t. Then another chick who comes into town every couple months and sometimes we bang. And another chick who comes through town every couple of years and I bang. And another chick who's into swinging and sometimes invites me to parties where we screw and might swap with some other couple...
.. and it goes on and on. I have tight, medium and loose sexual and non-sexual connections with women from all over town and indeed the world. The concept of having "a girlfriend" or anything even remotely resembling monogamy is now so alien to me that it's inconceivable.
I get that that's completely foreign to guys in their 20s. But I guess my point is... don't worry about what you're doing now because it will evolve as you get older. If you "get emotions" for women right now, don't stress. Just keep dating multiple women and eventually the concept of "falling" for one girl will seem like another life.