《（It‘s not a crime） It’s just what we do》这首歌的创作灵感和动力正是源于电影《七月与安生》本身。

MV中，黑白画面与彩色电影片段交叉剪辑，窦靖童与“安生”（周冬雨饰）、“七月”（马思纯饰）跨时空相遇。这对好姐妹的感情随着窦靖童炫酷而温柔的音符任性生长，欢笑、哭泣、撕扯、拥抱，道不清的纠缠，剪不断的羁绊，真正切中你我青春隐匿心事。

主题歌电影版MV中，窦靖童与“安生”、“七月”跨时空相遇。飘渺灵动的曲风中，黑白画面与彩色电影片段交叉剪辑，窦靖童清澈磁性的嗓音和“安生”、“七月”的羁绊成长交融，歌词娓娓道出女生心事，诠释剪不断、道不清的大胆青春。在这支MV的片尾还剪入了一段窦靖童对电影《七月与安生》的观后剖白。

Some time ago, some time had gone

One came back crying, one cold dawn

I told a lie, she made a truth

It's not a crime it's just what we do

All the times you'd think that I was holding back

Did you think I was just running from what I can't have

Yesterday you called and you were crying

I think the saddest words were I'll stop trying

Said the world deprived you of your wisdom

Then you asked me do I like who I've become

Every Time you'd make me question all the things in me

Did you think that all I wanted was to believe

Was to believe