Dear Sarasa:

You bring up another possibility and it reads reasonable. It makes sense that he used you as a therapist and a safety net. Thing is, you’ve been interested in a romantic relationship with him, serving him as a therapist and a safety net while hoping for more,  and he is actively chatting with another girl, open to the possibility of a romantic relationship with her.

I hope you ask him a few questions and find out if these possibility seem to be true and otherwise, if there are other motivations on his part, other explanations for his behavior.

anita