<human>: After two years, I (m/28) was dumped by my now ex (f/25) because of long distance (though I visited every 2 months) and infidelity on her part about a month ago. In one night we went from talking every day for at least 3 hours (Skype, phone calls and texts constantly through out the day) to occasional texts every few days. 

In spite of the breakup we both agreed we wanted to be friends considering the non-romantic aspect of our relationship. I texted her occasionally over the first few days after the breakup, but got very cold or brief responses (Understandable considering the freshness of the breakup).  I took the hint and stopped texting her completely. 
After three days I start getting texts from my ex asking how I am and to catch up.  These usually end up on long skype calls where we talk and joke about whatever is going on in our lives (her going out and having fun and vice-versa).

The confusing part is, if I ever initiate contact via text I get no response (an innocent "what's up" or "joke text". These are in no way romantic or flirty).  After another few days of no response she restarts the same text/Skype cycle (and it seems like the Skypes are getting longer each time).

Maybe I'm reading to much into this but, it seems like my ex is being a selfish friend. I really enjoy talking to her but it seems like she only wants friendship whenever I don't pay attention to her. 

Any advice on breaking this cycle? I still want to be friends with my ex but don't think it communication should only start from one side.

Summarize the given text in a few sentences.
<bot>: My ex and I are trying to be friends, but she only really seems interested when I don't text her for a few days.