lol! Only you can prove that, no one else can! Find some ways in which he's cuter :D
You can't. Beauty is in the eye of the beholder. Everyone has there likes and dislikes. Cute is very subjective.
Find another boyfriend that's cuter than he is
ignore him and let be seen with a cuter guy.
to some people they may be. its an opinion because you cant really prove it.
Prove to him that you aren't.
Tell Him
The dog is Cuter than the cat. Who is cuter me or him ?
prove your loyallty show him that you can be trusted.
He will forget about you and he will keep it a secret.
Haha. Great question! :) One great activity would be a puppy dog contest.
screw him! if that's all that he thinks about forget it and find a cuter guy who can appreciate your beautiful boobs!
just tell him and follow your heart
prove it to him by kissing him