how do you deal with feelings when you didn't get to breakup?

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is it possible to love more than one person at a time, i recently found my boyfriend from hs and realized that all the jittery feelings that i get in my stomach and all the butterflies are still there like they were so many years ago, a lot of emotions have came back, which i already knew would happen one day because this was the type of break up where you really didn't get to break up, it's something that stayed dangling in thin air, we didn't get to talk to each other after that and now we meet up after so many years, well we are both married, and sure that we love our other halves but when we talk we tend to forget that the rest of the world is here and that this is earth, of course mind you we have only been chatting back and forth and have not gotten a chance to meet face to face, however (yes i know it's the holidays) it's been about 1 week since i've heard from him, do you think that there's a possibility that this could just have been something that will just remain as a memory and that's it?