Background for reference: I'm a 44 year old married male with 3 kids. I have many male and female friendships developed in the usual ways - work colleagues, sport, social groups, kids parents etc. 

At one past employer, I got close to a female peer / colleague. We had a relatively close relationship insofar as we would often lunch together, grab a drink after work in our group, and generally hang out. 

I left the job to go elsewhere, as did she. We did however stay in touch - regular text/email, the odd lunch catch up - basically friends...we were very comfortable with each other and I really felt she was a good friend. We both shared a lot of personal information. 

She moved away (only a state / 1 hour flight away) with her partner, and had a child. Two years pass.

After a number of false starts (I was going to visit / work schedules not aligning) she finally plans a trip to her home city (her family is also here)

We schedule a lunch for a Friday. ( I'm actually pretty happy with that and schedule a half day off work) She bails and asks to move our catch up to Monday. Sure thing - family stuff will likely be required - I can juggle my schedule and move to Monday.

On the Sunday, I get a message from my friend asking "how long our lunch will take" on Monday as she is keen on setting up a date with an ex partner. Basically a booty call.  Her relationship has not been in a good place for some time.

The inference being that our catch up was holding her back from hooking up with an ex.
I get pretty offended. I make my excuses for the lunch, and avoid any chance to reschedule while she is in the city.

Her trip ends, and she returns interstate.
I receive one further friendly email as if nothing has happened. I don't respond and have made no attempt to contact again. 

I have blocked her number and email. AITA.

