How to fight someone stronger and faster than you?

Well, since I'm expecting you're a girl, I can tell you what you can do, and that's to fight gracefully. One common mistakes fighters make is be scared. If you have even a single doubt in your mind, you won't be able to fight properly, and you'll be raped bad. That being said, you don't need power to beat someone. You could try a sucker punch. Punch her straight in the jaw when she lasts expect it and shell drop like a can of worms. But if you're going to be noble, then here's what you do.

Get into her striking range, namely her kick range. It sounds crazy, but you can't win a fight by backing up or backtracking, you have to stand your ground. Watch for hips and her shoulders, know your left and right lol. Don't pay attention to her eyes, her body movement is what counts. In fact, stare blankly at her face while at the same time, keep your central and peripheral vision on her body.

The thing here is to react and counterattack. Use both forearms to block a punch minimizing damage, or better yet, if you dodged it successfully or parried it, go straight for her jaw. You can attack her neck. It isn't recommendable because it's a really dangerous move, but it would surely end a fight. Punch her in the neck with at least 25% of your strength, and she'll drop choking then walk away.

If you can block, parry and dodge, even if you're not stronger, but with the right timing, you could cause her to faint by following through with an attack of your own. Oh and if she grabs you by the hair, punch her in her breasts, she'll let go then.

haha cockstretching. Is the fight out in the open, or private? If it's private, i wouldn't, if it was public and I was you, this is what I would do. Confront him, say you'd rather not fight I guess. But if he calls you anything then be confident lol.. and be like I don't want to hurt you. For the actual fighting part...well it's mainly your reflexes and never throw a uncontrolled punch like what you see on TV. Keep your hands in a fist in front of your face or open palm works too.

You need to always go towards her and focus on her throat. If you're weaker and slower as you claim, get ahold of her throat and I assure you, it'll be all over in a minute.