Can someone tell me the difference between different types of romantic love like true love and puppy love? Doesn't puppy love occure when you are young, but can it happen when you are much older? Can true love happen when you are a teenager? Is every first love always puppy love?

I would set puppy love and true love in stages. Puppy love can develop into true love.

Puppy love is like a huge crush. It usually occurs when you have deep feelings for another person but don't know the person too well. It's possible that when you get to know the person more, this puppy love is disappear.

True love is when you know the person very well and still have those strong feelings.