Messages Pick up lines

Hey guys. I know this ain’t no pick up line but is there any websites where we can read how a conversation is going between 2 people? Not just the pick up lines but including the guy asking the girl out and stuff? Thanks

So the obvious answer is yes, I do. But here's the back story: Back in August, I slid into this girl's DMs. We exchanged a couple playful messages and that was that. I hit her back up again in September just to keep things warm. Then in October I asked, "are you almost ready?" She said, "for what?" I said, "our coffee date." She replied, "I might be ready by December lmao." She could've said that because maybe she had shit going on at the time or if she wasn't interested maybe think I'd forget about her by then. Well, I almost did lol and then I remembered today so I hit her up and said, "Since I'm nice I gave you a little extra time. You ready now?" However, she replied with "wanna have a threemsome with my future gf?" Keep in mind, we hadn't talked since October and it was about a coffee date, we don't follow each other and this was her reply. Now 9 times outta 10 if a girl asked this I'd suspect it to be some simp test or her being bored and just fucking with me with no intention of actually...fucking with me. But right when she sent this message she also looked at my profile and liked a recent (shirtless) photo of me which I don't think a girl with zero interest would do. But at the same time even girls with interest don't straight up ask if you wanna have sex, let alone a threemsome with a "future" gf? Futures gf? Which that's a whole other mindfuck. So I guess the question is, how do I respond with being open to it if it's the 1 out of 10 times she's serious about it, but also not come across as a needy simp to the effect of "omg I would love to!"

she (22f) messages me (20f) something along the lines of “i think i know you from somewhere” (clearly flirting, of course she knows me) what’s something clever to say back?

This girl is living in London. I'm not, not even around England. She'll be visiting my country next month, which is, very near. We met online, never met each other in real life but we've been exchanging messages well over 4 months and now we got closer thanks to my effort. Today she just messaged me in a sense that I'm kind of special to HER. This is exact quote from her "I feel comfortable talking with you in general.", "I only speak this frequently and this regularly with my real college friends". She's feeling comfortable towards me but I don't want all my efforts go into a friendzone. So I'm like, what's next? What do I do now? One time, she asked me about a nice restaurant in my town. Should I slip that into my next conversation like "Hey, I've found this nice tea place that offers English tea cake on the way back home. Do you want to check out this place when you visit here? To see if it's authentic or not (or something) Thing is, her profile on online app still says "I'm not here for looking for dates". But this could be a lie, right? Especially she seems to like me (as a friend as of NOW, of course. Later this will turn into boom-boom pow partner) Are there any advices you guys can give me on this situation?