Seriously, does this chant ("does your boyfriend know you're here") actually offend anyone!? Does that mean "we can see you holding hands" is up there as an arrestable offence? I find it hard to believe that these chants are likely to upset anyone, apart from the super-sensitive.
I am good friends with quite a few "gay" people and they wouldn't give two hoots about this, it really wouldn't even cross their minds to get upset by it.
There are far worse chants out there than those, and they aren't even being derogatory about "gay" people. If the songs were along the lines of "you're gay and we f***ing hate you" then that's different.....isn't it?!