Source: sdara90 and BOY Friend on Facebook
Also, this was posted on Boyfriend’s Facebook:
“Boyfriend has teamed up with ‘Sweetune’ for their upcoming single ‘Don’t touch my girl’. Sweetune is the famous composer duo who has worked on a lot of hit songs with KARA and INFINITE, and this is the 1st time for them to work with Boyfriend :) The band will make their comeback on 6th Oct. Don’t miss it !”
Here is a Korean news article.