Whats wrong with me

I say i love you
This i swear i do
But i never hear you say it back
Is there something i lack?
Even if we do go out,would it last?
Or should i but this feeling in the past?

Why cant you say "i love you"?
And then swear you do?
Because you always hear it back
Because there is nothing you lack
So if we would go out it would last
So we don't have to but our feelings in the past

But maybe thats to hard for you
And i don't know what i can do
Cant you give me an answer?