The fact you had no refute, proves I'm right

Going back to your ex is a stupid thing to do, OP, not only will it stop you moving on with your life, it's a lack of character will seep into other aspects of your life.

Have some integrity and forget about her.

I was wrong earlier too, in your particular situation, it is at best, manipulative and nasty. Which is worse than beta. You are saying you want to string along your ex for sex without a care in the world about her trying to move on, what her feelings are towards you etc.

I'm not being Mr.Morals here, if that's what you want to do then do it but you are - by any definition - a low life.

Go find other women or at least learn to be alone for a bit. Both of those options will help you grow, and make you happier.

Saying all that, I suspect you either have feelings for her still or don't know how - or at least scared - to find new girls. Luckily you've come to the right place, introduce yourself, and we'll get you in fighting form.