Welcome to our forum.
Quads are often known to deflate down to a triad after awhile, but that doesn't mean they're all doomed to the same fate. Every relationship is different, just as the people in it are unique. And regardless of what lies in the future, I feel it's important to treasure what we have here and now.
I hope you'll enjoy your time spent on Polyamory.com ...
Love means never having to say, "Put down that meat cleaver!"