Intermediate and High school is the ages people start dating. Are you dating this person because you LOVE them, or because your friends are in relationships and you feel lefted out? You should think really hard before saying yes to someone. Don't say yes and play around with their feelings. Put yourself in their shoes, would you like it if you asked someone out and they said yes just to muck about with your feelings. When you have stuffed up it is very hard to get things back the way you want. Relationships are no rush, you commit to a relationship when you think it is the right time. Ask your friends for advice, or just really think about it. See if you are ready and have the time to be with that person, and to support them while you are in the relationship.
Not just that, but if you are the one that is going to ask someone out, you have to be commited to it. Don't just leave her/him hanging around. They will think, are we really going out are is this a game. If you really like that person, then you don't want them to dump you. Then suddenly realise you havn't payed any attention to the relationship. After that you will try get them back, but if they know what its like being in a relationship with you they probably won't go for you again. I'm not saying they won't but they probably wont, unless yopu really make it up to them and they LOVE you!
