Welcome to Pherotalk!
Now I’m a guy so I don’t know too much about the women’s products, however most if not all of the social products are unisex here so I can help you out with those. A great product for opening someone up to conversation would have to be Instant Openness. It makes people more comfortable with you, so it very well could help you out with getting your ex to talk to you more. If your looking for more deeper conversations, Instant Honesty is the product you want. Brings along that extra comfort and helps to establish a deeper connection.
As far as women specific products, here is a great thread that can answer a lot more questions you may have:
Tisha’s Womens Pheromone Guide
Remember the search function is your best friend here! Good luck with your future experiments!