Bailey~

It sounds to me that if you allow this 'crush' to interfere with what you have at present, (which is a good thing, no less), you are taking the risk of ending up with neither of them.

Why try to fix something that already works perfectly fine? = Your present relationship.
You need to ask yourself AND listen to your answers...HONESTLY.
Questions like...
~"Am I happy in my present relationship?"
~"Why do I REALLY want to seek out this previous guy?"
~"What are the odds of success that this previous (few hour) encounter will provide me?"
~"Is this previous guy TRULY receptive of me?"

Although I agree with all of the responses you've received so far, I have to team up especially with what Pom has stated. If this guy was interested, there would be NO doubt whatsoever about his intentions. He would have made it all too obvious..to the point where you certainly wouldn't be here asking us if we see anything from this....(which, btw, is always welcomed...seeking an objective point of view is a good thing to do). What I'm meaning is, if he was truly interested, he would have made it all too clear to you already....(Gawd..I hope I haven't slapped my foot into mouth on this one.....lols).

Oftentimes, we take for granted the good that we already have.
Stability can become boring, and even unchallenged. Seemingly almost as though reaching stagnation.
But that is what stability IS. Normal, (for what normality IS), repetitive and, yes, boring.
If that is the case for you in your present relationship, then perhaps focus your attention on creating a lil excitement through creative spontaneity, but which is to benefit what good you already HAVE with your present bf.

Just my cents worth....hope it provides you a bit of help.

Take care. I wish you the best in your choices.

Shangrala