What is the best & DIPLOMATIC way to accept a guy's proposal?

actually it's very hard to say.once what happened is My sister, Paula, and her husband, Chris, had just finished tucking their young ones into bed one evening when they heard crying coming from the children's room. Rushing in, they found Tommy crying hysterically.

He had accidentally swallowed a 5p piece and was sure he was going to die. No amount of talking could change his mind. Trying to calm him, Chris palmed a 5p coin that he happened to have in his pocket and pretended to remove it from Tommy's ear. Tommy, naturally, was delighted. In a flash, he snatched it from his father's hand, swallowed it and demanded cheerfully - 'Do it again, Dad!'

well if he's asked you already & you know he wants you to be his girlfriend maybe you could make a it a point to just describe him as your boy when you're speaking to someone else? like maybe answer the phone in front of him & say oh sorry i can't talk i'm with my boy right now.. & see if he mentions it. i know if i did that my bf would say something like.. ''so i'm your boy, huh?'' & i could say ''oh yeah, you're mine'' in a teasing, flirty way.. & then i or he would be able to bring up whether we're dating yet. then it's not as random as mentioning it out of nowhere. not that that's not fine too.. but you asked for diplomatic lol

Say exactly that But its all in the tone of your voice and facial expression that makes it come across desperate or not..

hint that you want to do something or go somewhere with him. for example, if he has a car, you can tell him that he can drive you places.....something like that.

"So how about we make things official?"

'Yeah, maybe we should give 'us' a try'?