Disclaimer: I am NOT an expert but here are MY thoughts.
Alright, first of all, the headlines had nothing to do with the paragraph I just read... but it's alright let's get ahead. Look, there's different ways or more precisely analytical ways to perceive what you're going through. Now, that it's you who are experiencing it so that clouds your judgement, alright.
Your boyfriend and that relationship are what it is, but reading from that para I believe he's an ambitious guy and you're no longer in school... (when I moved out of state to pursue my higher studies, my best friend n I distanced each other, and ended up not talking to each other for 6 months, after which we realised we should TALK! Let it all out, all the insecurities, inferior complexity, what's there to lose? She was my comfort zone, you have to respect the distance, the time, the workload effort we all put in individually) Now, assuming that none of you TALKED... and it is possible that feelings change, in your case, you met someone and in his case, he just wants a good career... both of you are selfish in odd ways.. that's alright. Now this new guy that stirred up the real deal, here's the deal... most women in a long-distance relationship somehow wind up in this particular situation of a third party. Your loneliness got the best of you, don't confuse yourself a few moments of warmth with someone you've known for long but also ask yourself, why are you lonely at the first place? The boyfriend is not trying I'm assuming... So the deal is.. and the obvious question you need to ask is- NOT compare the new guy with your boyfriend but ARE YOU ready to go through the same starting phase of a brand new potential relationship with this man you just met risking your feelings all over again whether it could turn out to be a boyfriend or NOT. It's all about the decision you make revolving around your feelings, do justice what you feel first and then think about they feel.
What if none of them stands by you? What if your break up with your boyfriend was inevitable? What if you're meant to just explore and not be serious about any relationship and focus more on your OWN career, priorities first? IF your boyfriend's priorities changed, maybe it's about time you reset your schedule too.
Word of advice: "Work on your decisions, in the end, you are your own's, first love"