There is all the difference in the world in what people are like when they fall in love. Some then view all of creation through pink lenses, beaming at all and walking on the sunny side of the street. Is that annoying? A bit. But it's nothing compared to those who use falling in love as one more complaint about how the world doesn't understand them and their depth of emotion and nobility of soul.
It tells you a lot about their basic cast of mind, doesn't it?
And yes, I ran into one of the latter today.