I get myself too excited and cum too quick!

I agree with Niteshift5 too. If you J/O before fucking let say 30 minutes or one hour is much better.
When I got married I was 30 and I remember for a couples day I couldn't fuck my wife becouse as soon as my clock touched her pussy it ejaculated without any control.
So it is normal nothing wrong with you. Just try your stuff be empty before fucking her.

 

There is anyother way of your partner follows you. First before any penetration in her **** let it ejeculate , then after few minutes which still you cock is hard insert in her count all the way down and let it to in without any movment , so start kissing her french style for few more minutes and meanwhile kegel as much as you can. When your fucker gets hatd start pumping.
During the session your partner should cooperated with you.