Meaning that you'd been "lost for once" will be not only once just your lover left you and you can't get back up but that doesn't mean you can just feel heart broken, and that you had a gf or bf, and now they left you or you left them.
Also you'd have to be sad or heart broken not happy that you broke up, you need to want them again but you'll probably not come back.
Your Lost for once... don't worry you'll find others.
I got lost for once... I'll find one that actually likes me.