Mum mum mum mah
Mum mum mum mah
Mum mum mum mah
Mum mum mum mah
Mum mum mum mah
I wanna kiss him like they do on Broadway plays
Hold him, let him kiss me, come on, J.C., stay with me (I love you)
Mom and Valentine weren't really fair to us at all
And after I met you I dreamt that we were at a ball

Oh, oh, oh, oh, ohhhh, ohh-oh-e-ohh-oh-oh
I'll save my mom, but I'll think that Jace is hot
Oh, oh, oh, oh, ohhhh, ohh-oh-e-ohh-oh-oh,
I'll save my mom, but I'll think that Jace is hot

I'm in love
I'm in love
Unfortunately with my brother Jace
(Why'd I have to love somebody?)
I'm in love
I'm in love
Unfortunately with my brother Jace
(Why'd I have to love somebody?)

B-b-b-brother Jace, my b-brother Jace
(Mum mum mum mah)
B-b-b-brother Jace, my b-brother Jace
(Mum mum mum mah)

I wanna fight demons, as a Shadowhunter
I wanna kick 'em just like a football punter (Those demons)
Russian demons are kind of difficult to kill
But now, despite the glamour, I can see that they are real, real

Oh, oh, oh, oh, ohhhh, ohh-oh-e-ohh-oh-oh
I'll save my mom, but I'll think that Jace is hot
Oh, oh, oh, oh, ohhhh, ohh-oh-e-ohh-oh-oh,
I'll save my mom, but I'll think that Jace is hot

I'm in love
I'm in love
Unfortunately with my brother Jace
(Why'd I have to love somebody?)
I'm in love
I'm in love
Unfortunately with my brother Jace
(Why'd I have to love somebody?)

B-b-b-brother Jace, my b-brother Jace
(Mum mum mum mah)
B-b-b-brother Jace, my b-brother Jace
(Mum mum mum mah)

I won't admit that I love him
That would bug him
So I'm bluffin' while I'm lovin'
I'm just lying to myself, and then thinkin' "what of it?"
I'm such a chicken, not confronting
All the problems. Shadowhunting
Is my one escape, one escape
But I can't stop the heartache

I'm in love
I'm in love
Unfortunately with my brother Jace
(Why'd I have to love somebody?)
I'm in love
I'm in love
Unfortunately with my brother Jace
(Why'd I have to love somebody?)

I'm in love
I'm in love
Unfortunately with my brother Jace
(Why'd I have to love somebody?)
I'm in love
I'm in love
Unfortunately with my brother Jace
(Why'd I have to love somebody?)

I'm in love
I'm in love
Unfortunately with my brother Jace
(Why'd I have to love somebody?)
I'm in love
I'm in love
Unfortunately with my brother Jace
(Why'd I have to love somebody?)

B-b-b-brother Jace, my b-brother Jace
B-b-b-brother Jace, my b-brother Jace
(Why'd I have to love somebody?)

B-b-b-brother Jace, my b-brother Jace
(Mum mum mum mah)
B-b-b-brother Jace, my b-brother Jace
(Mum mum mum mah)

B-b-b-brother Jace, my b-brother Jace
(Mum mum mum mah)
B-b-b-brother Jace, my b-brother Jace
(Mum mum mum mah)