<human>: Provide a brief overview of the text.

Short story: My ex broke up with me 3 months ago after a year and a half together, both [24]. I have enforced no contact from my end. She does keep buzzing in every now and then to ask how are you or something of that sort. 3 weeks ago, she moved to a new city and broadcast her new number to everyone but me.  4 days later, she sends me the same broadcast as if she's sending it out to everyone now. I have stuck to my end and not replied or said anything.  

Today, she buzzes me to ask how I'm doing and about my family and then says I haven't checked in in a while so she contacted me.
What can I reply to this? I'm really not sure.  On one hand, if I don't reply, it'll look like I'm still hung up after 3 months. I am, but I don't want her to know. The struggle is mine and I'll deal with it.  On the other hand, if I do reply, I don't want to say anything that makes it look worse. I've already started moving on and picking up the pieces. I don't want to come across as this guy who is still mourning over her. I am mourning, but that is the loss of my trust and a relationship that I valued. I don't regret losing the person she has become.
Help me out /r/BreakUps
<bot>: Girl breaks up with me, leaving me a shell of a person. Tries to check how I'm doing for whatever reason. Not sure of next steps.