<human>: Condense the text into a few key points

So Valentines day, gf wanted to cook in, i said great.  we both have 2 roommates.  we all get along (her with mine, me with hers... i think?).  I don't think I have the right nor the expectation that either set of roommates should cooperate... but it's worth a shot.

her roommmates are both single, very nice girls.  Enjoy different things, I thought about sending them out for dinner, but its Friday night and Vday... so prob not the right thing to do.  Movie is another idea, if i can find something they both are into.  obv I pay. bar for drinks gets complicated because of vday in my mind, maybe im over thinking it. What ideas do you suggest? or..what is the best way to go about this (I always think honesty and being upfront is best).

Other option is my place, which is less nice/desirable to be at for some minor reasons.  one roommate might/could see a girl that night, other is single and no plans right now.  These are my good friends, I could say to them "hey can you stay in your room for x hours" but its a Friday night, and I don't think my wishes or ideas should be put in front of their happiness.  I thought of sending him/them out to the bar with some cash or same idea with the movie.  

Eating the dinner in either of our bedrooms is not a great option.  Idea is to get like 2-3 hours alone/semi alone to cook dinner, relax, then we can isolate ourselves in a room that isn't public to the apartment.

just trying to find a nice, polite, reasonable offer to make, to show that I appreciate them doing so, and that they can still enjoy their night.
<bot>: gf has two roommates, so do I.  what is polite, nice offer to make to get one of our apartments alone for a few hours.  some of them being single makes this more...interesting.