This may not be the proper place to ask this question, but I feel like I know the negative responses that I will get on r/BPDlovedones.  I figure that the people on this sub may be able to advise me on my best course of action in order to cause the least amount of disruption in the life of my ex who has BPD.

Lately my ex has been reaching out to me regularly, mostly asking me to go out for dinner/drinks, but sometimes making inappropriate suggestions of a sexual nature.  She is unaware that I am in a new relationship, and I am wondering if there is any way to tell her without triggering a massive negative response.  

I know that she has started therapy, and I would hate to derail any positive progress that she may be making.  Having her in my life is not an option, but I do not want to cause her any more pain than I know she is already feeling.

Any advice on how I may be able to let her down as easy as possible would be greatly appreciated. 