Meet up and discuss things.
No that is bullshift, if the girl wants to break up then she is stupid.
The lead vocals guy was having an affair with the drummer's girlfriend
NO
A man may stop texting you when he discovers that you have been cheating on him or when he is planning to break up with you.
Well wait for him to break up with his girlfriend but don't be the one to break it up.
She wants to break up with you
It depends if there is other guys going then you should ask her why your not invited but if there is no guys going maybe she is just having a girls night
break with the girl :D
relax. maybe hes busy. he needs a break sometimes
It means she is either having a hard time in life or needed a excuse to break up with you.
Why are you dating my girlfriend?
He probably won't break up with you just because you haven't texted him as much as you did before/ as much as he texted you. If he does talk to you about it, explain why you haven't been able to text, and tell him you still care about him. If he still doesn't understand, it probably isn't worth it anyways.