This is becoming a occurring theme in the make up field.
Guy gets dumped by his girlfriend, he barely makes it through the break up alive and all of the sudden a few weeks later, the ex calls him up and tells him she thinks she made a BIG mistake.
Of course, a hero of this story, our guy, is already kinda seeing somebody else.
To tell or not to tell? To date or not to date? Or even date who? I wish there was a simple answer to that question.
First and most important peace of advice I can give you is to be honest.
To everyone involved.
To the new girl and to your ex.
Also don't make a big fuss over it and don't be apologetic.
If you and the new girl are already in a exclusive relationship, then it's a no-brainer.
Tell your ex it's too late or tell the new girl you want your ex back.
Don't try and mess around her back, chances are you'll lose both of them and make a fool out of your self in the process.
If, on the other hand, you two are just casually dating or starting to, then you will have to be open about the situation.
Give your new date some time to think about that offer and if she refuses to see you, don't get offended.
For starters she's the rebound girl and the other thing is she's not even sure there will be a rebound.
Be a gentleman about it, leave her with options and when you present a situation don't make a big deal out of it.
If you make a big deal out of it she'll make a big deal and no way you'll pull that off.
Tell her your ex called you up and wanted to see you.
And don't act as if you didn't want to see her and she's just nagging you (in case you did, of course).
The situation with your ex might be a little more complex then this.
If she left you cause she was suspecting you of cheating, then, for her, another woman in the picture will just reassure her doubts.
Especially if that's the woman you're dating right now.
There is no way you ex will give you a chance.
If you don't want to see her making a scene you might even tell her that over the phone when she calls you up for the first time.
If she left you for another guy, you're in a much better position.
You can keep seeing her and the other girl and take your time about it.
Tell you ex you're just not sure and that she hurt you really bad.
You don't want to make a rash decision and she can wait for you or leave.
Don't sound mad either, try and be sincere about it.
If you try and revenge her leaving you with your new date it will just backfire.
Don't.
If you're still mad call her a few weeks later when you're not.
You'll just hurt her and it won't feel as good as you hoped it would.
And if your break up had nothing to do with other people, then you'll just have to be very honest about the situation.
Tell her what you feel about your new date, tell her how serious it is.
If it's not serious don't make a big fuss over it, just casually mention you're seeing somebody but you missed her and are happy to see her.
You two won't be able to pick up where you left off, but you might just build a stronger relationship the second time around.
Best of luck.