<human>: Can you provide a brief overview of the text?

So the starting point is I dated [22/m] and so far know him for 3 months. I liked him, but we official stopped dating 1 week ago. He's a great guy so, we ended on good terms (we ended because timing and distances trouble). I'm kinda slowly getting over him. However, before we "official" told each other about ending the dating, he told me talk to his friend [25/M], about any official questions if I had about work etc. 

So, I went to Skype and started to chat with  [25/m]. So right off the bat, I asked about work questions etc. Soon we started chatting more in friendly terms since he had a lot of the same interests as I. He sort of flirted with me, I was guessing it's just to be more friendly and was a light flirt so thought nothing of it. Of course, at the end he gave me his number and told me to text him. I kinda felt awkward. The next day I had text him with another question about work. Again, he started flirting more with me, but I kind of avoided flirting back, because I feel it's disrespectful to him and [22/m] that I would flirt with his friend, since I dated [22/m]. [25/M] also hinted that we'd meet up somewhere, which I avoided to answer. 

What should I do? They are close friends, and it feels wrong to flirt around with [25/m] even though I enjoy talking to him. Should I talk to [22/m] about this? Or tell him [25/m] I dated  his friend [22/m] ?
<bot>: I dated [22/m] and now his close friend [25/M] is flirting with me and hinted that he and I should meet. What should I do?