You don't have to worry so much, Charizard. Even if he talks about it, you can easily prove yourself in battle, right? Psst... And you can swim now!

I know Ivysaur doesn't like him that much (in fact, none of us do) but I think she'd understand it's the right thing to do to help injured Pokémon. She'd probably do the same if Charmeleon was... dying or something.... uh... right?