《Day 1》的歌詞是：
Baby I know you're feeling me
And I know you're feeling me
Yeah
Girl, your love's like a drug
And I need it from week to week
You're my sunrise, my moonlit bliss
Every time you come home with a new dress
It's always so real
The thought of our life
When you give it all up for me and my
This love don't discriminate
Can't even compare
Gotta find another term to make me thrive
In my hour of need
Oh no no
Girl I'll make you feel alright, yeah (Oh)
'Cause when I close my eyes, all I see is you (Day 1)
So let's ride forever, day 1, 2, 3 (Oh)
No doubt about it, let's make it last (Oh)
Day 4, we're feeling good, we can make it last (Oh)
I'm on my forever, day 1, 2, 3 (Oh)
No doubt about it, let's make it last (Oh)
從以上歌詞中，可以看出《Day 1》的歌詞描述了一位男士對女友深深的愛意和依賴。他感到自己離不開女友的愛情，他珍惜他們之間的感情，並且希望能夠永遠在一起。整首歌詞充滿了對女友的讚美和承諾，表達了對愛情的堅定和執著。