What's the name of this song?

I recently heard a song on the radio and wanted to know they artist and title.

-It was Indie / Alternative rock

-male singer

-Most likely a British band (judging by the singer's accent)

-only line I remember is something like "she is (was?) such a pain in the as*"

seems to be pretty recent and it sounds so familiar but I can't figure out the name. Could anyone help? Thanks a lot