Depends
Different perspective.
Some say love is nothing morew than a chemical reaction intended by evolution to keep people together for the proper raising of children. Human children take a long time to grow and become self sufficient, so it is necessary to have two parents ideally to facilitate that process. "Love" then would be nothing more than our biology telling us to do something we are programmed to feel. If thats the case, and all the chemicals are working properly, then it is no less "real" than anyone elses love. Might be less practical, but no less genuine.
If that isn't the case, and love is something beyond the physical, then how do you put limits on something that can't be comprehended.
The problem I think is that most people confuse "feeling good" with love. They are "in love" so long as it makes them feel good, and no longer "in love" when it doesn't. The understanding is poor.