Ok so this guy named Ronald likes this girl who is popular. (I can't remember her name). He mows her lawn all the time and creeps on her. He is saving his money to buy a $1000 telescope. The girl borrows her mom's white suede suit without asking and spills wine on it and goes to the mall to buy a replacement and it just so happens that Ronald is buying his telescope, but when he see's that she is upset he goes to see what is the matter and realizes she needs money. So he makes a deal with her that he'll give her the money if she pretends to like him and date him for a month. Well they hang out and he takes her to an airplane graveyard and she ends up really liking him but he's just thinking about their deal. Everyone starts calling him Ronnie and he starts acting like a really big jerk to the girl.
It's an oldish movie maybe 80's or 90's. I really really need to know the name of it! Please help me!

Can't Buy Me Love (http://www.imdb.com/title/tt0092718/)