My girlfriend is upset with me?

You can't. Well, you can, but it'll be hard. She's probably really upset with you that she had said no when you asked her to come with you, the cousins and the ex. You just to constantly reassure her and make her feel that she's more important.

You need to decide if having a friendship with your ex is more important that having a relationship with your current girlfriend. I believe guys and girls can be friends if they've dated before, but it's still something normal to get jealous over. You're girlfriend will get upset at you, and be jealous if you talk to your ex, so you have to respect her feelings about it. Your girlfriend is probably a little insecure, so you inviting her along won't reassure her of anything. It's a sticky situation, and I wish you luck.

Some girls do not understand that. And yes your girlfriend is one of those "some". It's better not to do what makes her upset. And unfortunately, there's nothing you can do about it. If she don't want to understand, she won't. Just respect her decision. It's hard you know. Do you want to see her hanging out with her ex even they're just friends? I bet you won't.

Its difficult bro, but you girl seems to be heavy jeolous, and that's not healthy. Txt your ex infront of ur girl to show her nothings happening, that's if nothing is happening. Otherwise communication is the best solution to this so sit and speak to her and txt your ex with your girl ther. But why be in contact with you ex if its causing friction, is she a family friend if she is your girl must understand. Good luck

Have your ex tell her that she(your ex) doesn't have feelings for you anymore in front of your current girlfriend. Or you be the one to tell your gf *insert cheesy and lengthy version of "I'll never look at anyone else" here* in front of your ex.

..or make them become friends. That works, too. (beware: ex might tell gf inappropriate stuff about you.)

lol.

Just tell her to her face that you and your ex are just friends, and that if you want to keep this relationship going you need trust.

im not trying to be mean, really, but you shouldn't be hanging out with your ex in the first place. it would make me feel insecure and jealous, and i know that you wont listen to what i have to say, but at least dont invite your girl friend to hang out with your ex

well us girls always gets jealous for the stupidest reasons, maybe shes jealous tht u still talk to ur ex, like she thinks ur ex will take u away from her.

Girls are freaks when it comes to this stuff, believe me she won't leave you alone if you keep giving her the opportunity

Don't worry it's probably just that time of the month again.