Brad: This is a very common issue for men.
1. Take lots of time with arousal, before entering her. The faster you go to intercourse, the faster you're likely to reach climax.
2. You can train yourself to delay orgasm. Start by entering her very slowly. Literally, just penetrating with the tip of your penis then gradually entering further.
3. Let her go on top sometimes.
4. Just stop thrusting when you feel yourself moving toward climax. Just lie with her a minute until the feeling of impending orgasm passes. That takes discipline.
5. If these steps fail, then you will require more. You can research the squeeze technique online. If these fail, then you will probably need a medication such as an SSRI. That's the last step, though and most men don't need it once they "practice" for a while. Like anything else, you can train your body to respond differently.