Once you are in puberty, your hymen thickens, pulls back to the vaginal entrance rim and becomes very elastic. This is due to the estrogen surge you experience during puberty. Did you take a mirror to look at what is going on? What shape your hymen is?
You have 5 choices:
1. Leave it alone and do not have intercourse
2. Just go for it. Let him force it in. Make sure you are very well lubricated and go for it. The quicker, the better.
3. Do it yourself. Use fingers or some object that is clean and smooth and shaped like a glass coke bottle or a tapered brush handle.slowly widen it over time and tear it.
4. See a doctor where they can cut it. This option normally does not work very well with your parents if you are still a teenager.
5. Just continue to play around. It will likely stretch or tear from fingering as he becomes more adventurous.
Once it tears, use normal NSAID pain killers (advil, ibuprofen or whatever).
Remember to always be safe and protect your health and future. You are responsible for that as you will end up with a baby or STDs if you are not careful.