Yeah this ticked me too, Ramon is the kind of person who likes to pick on the weak and he hates Matt the most. He won't miss a chance to humiliate him. So why he didn't take it?The very fact that he currently is and possibly has been banging Matts friend and trainer Anna even if Ramon wasn't the type to use this fact which he is his partner
So far as we seen in season 1 Ramon is all muscle and very little brain.
Maybe he would have thought that if he do this now, he might not get another chance to get her on bed or he would not get to fight him?
But he could have said that in secret cause Matt has no reason to confront Anna other than they are partners which will again only hit back at him cause they are not together.