Went to the table. Introduced myself. Recognized one of them. A cute girl I worked with quite some years ago. That's the one I'm interested in. Talked about both of them, the usual conversation starters, a few jokes here and there. Focused on both of them what they're up to, if they got any Xmas feelings going or if it's forced like usual. Hehehe some laughs going. Left the table later on to join my group I went out with to the bar and told em I'll catch em later during the night but it was nice talking a bit. Got some nice vibes from the girl I liked.

Night goes on. Had to leave. Went to their table to say bye, with the intention of just saying that I had a nice time meeting them. Said that they looked good there and I'll snap a pic of them before I leave, they rejected laughingly. Anyway, then I jokingly said that remembering names is always an issue, so I introduced myself and asked them about their names again.

So about to leave, I fucked up by saying that perhaps I had her already on fb (the girl I worked with a long time ago) and we should catch up there and asked both of them about their last names so I could add em to fb (needy, fucked up). They said that ye you'll have to hunt us down (and add us) but didn't get a last name.

TL;DR how would u handle a situation of two girls alone... you're about to leave, but wanna show interest in one girl for a later date. I focused on both, so they both had a good time but fucked up with the fb thing at the end by trying to get both to add me/I add them.

What shall I do? Find her that I'm interested in and write to her? Ignore the other one?