my lady friends or my girlfriend??

I'm a guy, I've always been geekish. I'm the kid that spent all freshmen year alone in the cafeteria and not mysterious loner alone, I'm talking about outcast alone, the anime kids thought I was a loser. Then one day in Sophomore year the school's resident 'mean girls' decided I was somehow interesting and the eight of them have been my friends since, this was in 2004. I didn't have any 'boys' so I literally spent high school giving and forcibly receiving pedicures and manicures because 'it's so cute'. For some reason they felt I fit in with them, totally non threatening that's what their dad's said which is why I spent many a sleepover watching god awful movies. But now it's nine years later and we all still run around together we still have lunch on Sundays and we all have this brother-sisters relationship.

I work as an industrial installer so I have gained 'boys' mainly coworkers so I have BBQs and all that but it's still hard for me to meet women. I know my girls have love for me because they freak out if I don't call at least one of them once a week.

I will be honest, these girls are mean. They've made many a girl cry and a Guido. That part of them never grew out of them but they've never been rude or mean to me. I am as they say the man in their life. I'm very happy with the friendship I have with them except for their tendency to drive away other women.

They have this tactic where they separate us the day I introduce them, four of them will ask me about her while the others will literally make her cry. We've had our arguments... I'm always wrong.

But now I met this other woman and they were surprisingly nice to her, I didn't introduce them until about the 6th month of us dating, this was yesterday that my girlfriend met my girls. They were on their best behavior, very curious about her, complimenting her etc. etc. I don't know if women can communicate without communicating but my girlfriend does not like them at all and she's telling me that I need to stop having them over to my house to swim, I need to stop greeting them with a peck on the lips, and they may not shop for me or decorate my house.

My girls have been with me for 9 years. Everyone of their tattooed, UFC, black and white color schemed t-shirt boyfriends have called me sport or champ at some point or another and eventually totally diss me to which my girls will kick them to the curb. I feel I owe this loyalty to them because they've never left me hanging. But I am afraid that if I let this girlfriend slip away I may never find a girl. I'd be surrounded by women but I'd totally be alone again.

And no I cannot just sleep with all of them because at this point it would feel wrong. I can't talk to them because I know them, they're pretty but their bitches and they will definitely chase this one away. So what do I choose????