It's time for revenge..

Please don't try to harm anyone please why don't you cast a binding spell to stop them from harm

This thread has been moved to Spell Suggestions from Magic Items.

There are many hexes on the site,find one that you like and edit it to suit you,don't do anything harsh though and think it through long and hard

Also always do a protection spell before you cast the hex and do a cleansing ritual after casting the hex

She and my current boyfriend had history years back when we were broken up.
He brought her into our lives because we were having some issues.
He seeked her instead of me. I told her that he was my boyfriend and didn't care and continued to text him and tell him that she loves him. He said it back but he says he never meant it, he was just so hurt from me that it felt good that there was someone out there who was mentally and emotionally dedicated to him and him only. I am dedicated to him, but I don't know how to show him.

Maybe try transferring all that pain you experienced from you to them? That way you can get rid of some negativity while taking "revenge". This will cause them nightmares or guilt but nothing more. Just think about what they have done and accumulate all that energy in your belly and then push it out of your belly to them ;)

Interesting, how do I do that?

This is my specialty in Magick
I'm great and curses,I'm also full of anger and my life is constantly a mess due to it..If you want a real curse
A Hoodoo curse email me..I'll tell you items to buy and what to chant.The main ingredients needed is your imagination
And lots of hatred,anger and Rage,tonight's a great day and tomorrow to send it since peoples senses are in the Holiday mood
You can catch them off guard..

I don't condone curses, you should seek other methods. To answer your question, what Soullen is talking about, take the picture of the woman, channel all your anger, hatred, and negative thoughts and send them her way. You could visualize her getting hurt, or moving away, or visualize black tar sticking to her [Which would be the negative energy] you could also draw on the picture if you need more physical resease of energy. You could also make up a chant. It doesn't have to rhyme but it should get your point across [look up 'you messed with a witch']

Personally, I understand you're angry, but I would try to talk with your boyfriend, perhaps seek counseling for the two of you. Relationships aren't easy all the time, but if you both love each other, I'm sure you can work through this, just trust him, and you both need patience with each other. Try to keep calm and talk. Good luck to you whatever you choose.

Guide me?

Honestly it sounds like the real issue won't go away this way, but if you are just trying to temporarily get a satisfaction with a possible dark lesson/consequence, then by all means continue.