首先更正一下，是 breathe 這個動詞，而不是 breath 這個名詞。

這首歌前邊的歌詞是這樣的：

Oh, it"s so hot, and I need some air.

And boy, don"t stop "cause I"m halfway there

It"s not complicated, we"re just syncopated

We can read each other"s minds.

One love united

Two bodies synchronising

Don"t even need to touch me

Baby, just

Breathe on me, yeah, oh

Baby just, breathe on me

We don"t need to touch, just

Breathe, oh, yeah

從歌詞中可以看出，主人公需要空氣，並受我們不一定接觸，只要向我呼吸就可以。所以，breathe on me 是“衝著呼吸的意思”。