Have you ever told a man he's bad in bed?

If he isn't doing it for you, be subtle and next time you are getting down and dirty, guide him. Say like, "I like it when you do this..." or you could grab his hand and put it where you want it. If you want him deeper. Tell him! If he is too rough, just say something like "be gentle".

You are right, some do treat you like they treated their exes. This is why they need guidance. They need to know what you want and what you like or otherwise they have to guess.

Just, don't say they are bad, because that will really lower their self esteem, just guide them and they will soon get the hang of it.

tell him upfront, the longer you hold it in, when u do tell him he'll think ur cheeting and just had sumone better, so the sooner the better,and say what u want how u want it and just be forward and honest, sh#t any guy would be dumb not to comply