Whats the meaning of this song ? ? ? ? ?

At first i thought someone was cheating on someone by the "I can smell her perfume on my bed" but i realized he was singing about the girl he loves. Its pretty much about this boy who loves this girl and wishes he could give her everything. But then the girl found a couple who was really in love and discovered what true love looked like and decided what they have couldn't possibly be love. so he's worried its the end of them