The difference is that teenagers don't have much life experience. It's likely the first time that they're experiencing romantic love or something.
Teenage love is someone like not knowing how to ride a cycle and the watching others ride a cycle and think “This should be a piece of cake.”. He then buys a.
Relationships are an integral part of life, growing up and maturing. Childish relationships say "I love you" to stop fights; adult relationships say.