Do some groundwork and research first. The other girl may have discarded her romantic feelings in the intervening time.
Also, check with your girlfriend not just if she's cool with it, but if she actually likes the idea herself. If she's willing to do it just for your sake, forget it. If she actually likes the idea because SHE thinks it'd be cool, that's fine.
Next, make it clear to the other woman what the offer actually entails. If she goes in with expectations because she failed to understand something properly, then the shit is going to hit the fan. Casual sex, threesomes, fuck-buddies etc, can and does work- but it does require some preperation beforehand. But that's for fuck-buddies; somebody you either don't know or have a, shall we say, "working relationship" with.
"Friends with benefits" can also work, but it's far more complicated. That's not to say it isn't possible or a helluva lot of fun, just... Complicated.
So long as everybody understands what the arrangement actually entails and doesn't go in hoping to get more out of it than they should expect to, then it can work out really well. But you do need to understand that it's a big if.
Also, check with your girlfriend not just if she's cool with it, but if she actually likes the idea herself. If she's willing to do it just for your sake, forget it. If she actually likes the idea because SHE thinks it'd be cool, that's fine.
Next, make it clear to the other woman what the offer actually entails. If she goes in with expectations because she failed to understand something properly, then the shit is going to hit the fan. Casual sex, threesomes, fuck-buddies etc, can and does work- but it does require some preperation beforehand. But that's for fuck-buddies; somebody you either don't know or have a, shall we say, "working relationship" with.
"Friends with benefits" can also work, but it's far more complicated. That's not to say it isn't possible or a helluva lot of fun, just... Complicated.
So long as everybody understands what the arrangement actually entails and doesn't go in hoping to get more out of it than they should expect to, then it can work out really well. But you do need to understand that it's a big if.