Is a word....Yes.
Love is infinite if you let it be.
Time, energy, and a few other resources, maybe not so much...and that's usually where the juggling act gets complicated. But it's manageable.
But from the sounds of it, your spouses knew what was going on, and there's been openess about the process. So, what damage could possibly be done?
There's no terrible or selfishness in finding love for another. How you let it affect your actions may be a different story, but that's where communication and honesty come in.
Welcome to the Forum.