lol help

how do I subtly be flirty with an ex lmao (we dated for 2 years and have been broken up for 2 years and are now reconnecting and will be living in the same town in 3 months) we've been talking again for a few weeks and that connection is still clearly there and I can see us getting back together in the near future but I don't wanna bring that up quite yet. so like. how do I get across that I still have feelings for her & stuff without being obvious 👀