Just found out my GF has a HOTTER sister! what shall I do??

[Facetious]

You could do the admirable thing but it doesn't sound like it's gonna happen.
I pity your g/f if she loves you and you leave her...

 

[zeeblofowl_1969]

Threesome!!!!!!

 

[PirateKing]

♫ So what if she's hot, you gotta love the one you got

 

[CherylFan]

The most you can do is fuck your girlfriend and while you`re doing so, fantasize that it`s the sister you`re boffing. But for goodness` sake don`t call out the wrong name or you`re doomed.