i don't know what "but my friends cant see the message that is with" really means, but if it means that your friends only see the image without the text:

they need to actually "play" the mms. there has to be a function "play" or "start presentation" or whatever it's called on their devices. most people don't know about that at all and therefore never try it. it seems fmms separates text from image in a way that receiving phones interpret as two parts of a multi-part mms.