u/wrng_un

I hve frnd who is slutty who is an ex gf of me. She left me in the relationship which was about 6 months after my school studies. Problem is that she is acting like an innocent for me which i know she isnt. I don't like that. She has come bck recently(was chatting odd at mean time) and behave like she is intome. And me also having that feelings for her though i know her behaviour.

What should i do?