Does it mean your boyfriend is cheating when he tells you he has band practice on a Monday morning and it is a coincidence that all five people have that time off when they work or have class?

It really depends on wether or not your boyfriend does this often, like says hes got to go somewhere with out you, when you think somethings up.The best way to find out is to ask him if you can join him. if he says why? or no. then you should find another man.if he says yes then don't worry about it.. hes not cheating. but this does sound a little fishy.