Jace is a half-angel warrior with a tortured past
Sebastian has him under his control, he’s a half demon, demon, demon
He ;s under my brother’s influence, not entirely the same, but he still loves me
He ‘s different now that Sebastian has him
I know you the clave told me not to search for him
I know you said to be careful
He is a bad boy with a tainted heart
And even I know I’m playing a lethal game

[Chorus:]
But mama I'm in love with a shadowhunter
And this type of love isn't rational, it's physical
Izzy please don't cry, I will be alright
All reason aside I just can't deny, love the guy

[Verse 2:]
Sebastian is a villain by the devil's law
He is a killer just for fun, fun, fun, fun
Sebastian’s evil and unpredictable
He's got no conscience, he got none, none, none, none
Oh-aaall I know, should've have run but no
'Cause Jace needs me
And even I know this ain't smart

[Chorus:]
But mama I'm in love with a shadowhunter
And this type of love isn't rational, it's physical
Simon please don't worry, I will be alright
All reason aside I just can't deny, we love each other

[Bridge:]
And he's can’t stay away
he gave me his ring
His lucky charm
So I guess it's OK
He's with me
And I I know the clave is talking
Try to declare he’s dangerous
to save the world
But I don't even hear
I don't care

[Chorus:]
'Cause mama I'm in love with a shadowhunter
And this type of love isn't rational, it's physical
Izzy please don't worry, I will save him
All reason aside I just can't deny, I love the guy

(Oh-aaall I know)
Mama I'm in love with a shadowhunter
(Should've let go)
And this type of love isn't rational,
(But no)
It's physical
(Oh-aaall I know)
Mama please don't cry, I will be alright
(He can’t stay away)
All reason aside
(But no)
I just can't deny, love the guy