Lyric discussion by historicalline 

Cover art for Just Tonight lyrics by Pretty Reckless, The

I think it's just about a relationship, and it's not necessarily an abusive one. But it's one that she knows isn't working. He doesn't know her.

She's high, and he's drunk. And she wants to tell him all that she feels. But because of these physical factors she doesn't and can't. So instead of being alone and ending this relationship, she stays with him for the night, and they make love because it's better than being alone.

"And when the light hits [his] eyes," (in the morning), she'll leave.