"1 LOVE" romaji and translation

[oji-i-san]

^
wow, you've been wondering this for more than 3 years? Well, may I comment here?

I have no doubt that literal translation of
"nemuku naru mae ni" is "before getting sleepy"

But I'm afraid "with it" of "sleepy with it" may be confusing.

My translation would be like this for related lines:

『そこに居れば花は枯れる事なく咲き続けるさ』って
sokoni ireba hana wa kareru koto naku saki tudukeru sa tte
"If you are there, flowers won't die down and will keep blooming"

何の冒険もなく刺激もない保険だけをかけた寝言に
nanno bouken mo naku shigeki mo nai hoken dake wo kaketa negoto ni
No adventure, no excitement, but just insurance is in your sleep talking

つられて眠くなる前に行くわ
tsurarete nemuku naru mae ni ikuwa
Before getting sleepy hearing it, I'll go

欲しいのは、そう、JUST 1 LOVE
hoshii no wa, sou, just one love
What I want is, yes, JUST 1 LOVE.

"negoto" is "sleep talking" but it can also mean "nonsense" or something you say when you don't know/understand the real situation(s).

So, hearing this song, it's natural to have a picture in which one person is not sleeping but talking unrealistic things and the other is getting tired of hearing them.

I hope this helps your interpretation.