The First Time You're Unfaithful

The first time you're unfaithful won't be the worse time you're unfaithful
It will probably just be a kiss with a stranger when you're on the piss
But next time, you might fuck him or, even worse, you might suck him
I know I said I'd want to know but that depends how far you go

How do you think we will adjust now we've incorporated lust?
And will you put my trust to test if the shagging's not the best?
You said you know what I'm like

We were chatting with your sister, I was winding you up - you think I've missed her
And she was fairly adamant I'm nothing but a lying cunt

She said the first time I'm unfaithful won't be the worst time I'm unfaithful
Once I've got a taste for it, I've everything to waste for it

So do you think I can adjust, now we've incorporated lust?
Or will I put your trust to test when my behaviours not it's best?
You said you know what I'm like