When a Grown Adult is Expressing Having a Crush on Someone, Are They Defining Their Inability to Truly Connect with Another Person?

What's the first thing you think of whenever you see or hear a grown adult express having a crush on someone? The first thought that crosses my mind is the expression "Love at first sight". Arguably, this expression ultimately translates to a superficial infatuation which may or may not be reciprocated.

The word crush is interchangeable with the cliché Puppy Love and are both generically defined as an adolescent-minded temporary infatuation, or a foolish or unsubstantiated passion. As with the expression "Love at first sight", a crush or puppy love may or may not be reciprocated by the object of a person's infatuation.

Because the general nature of a crush or puppy love is superficial at best, I can't help questioning the character and emotional health of a grown adult who's demonstrating crush-like behavior. I suppose it could be acceptable to some degree for an adult who's never experienced an adult relationship before to demonstrate crush-like behavior, but what does it say when such behavior is demonstrated by an experienced adult?

"Experienced Adult", let's break down what the combination of these two words really mean. An experienced adult is a grown individual who's experienced one or more, usually more, failed relationships thus far in their life. The key thing here to consider is the continuity of their failed relationships. What exactly are the reasons for this person's inability to maintain a stable relationship?

If such an individual's relationships were all initiated with or rooted in crush-like behavior, then it might suggest their inability to establish a deep, meaningful, emotional, psychological and/or spiritual connection with an intimate partner. But the fact that they've repeated this behavior more than once suggests that they're unable to learn from their relational mistakes, or they're ultimate ideals of love are being in love with love itself.