Definition: Given a real-life anecdote of a complex ethical situation, generate a suitable title that describes the main event/root cause of the situation. Imagine that the given text is a social media post, and you have to write the title of the post, so the users can decide to read the main text or not.
Input: So I was playing video games with my friend, and we were expecting another one of our friends to join us and play.

My girlfriend's then joined the call and said hi, and my friend went 'oh, hi' because he was expecting someone else. My girlfriend got upset and left the call but I managed to convince her to join again. The second time she joined I said hi, and so did she, but my friend didn't, and my girlfriend questioned it, to which I answered 'i don't know', my friend then said 'just ignore her idjot' in a really joking way. After that my girlfriend got upset again and left once more.

I then went on to text her that he didn't mean any harm and was just joking, to which she answered 'but why would he do it again if he knows I got hurt the first time', I again answered I don't know.

She then said that I was taking his side and defending him instead of having her back, as she always has mine.
She's now really upset that I don't have her back as often as she has mine, which is true, but I don't know how we got here from him jokingly telling me to ignore her.

My friend said that if I could add her to the call he can explain and apologize to her, but she refused to join the call and instead said 'fuck off" and 'stop adding me' which I find very childish, since she refused to resolve the situation. She said he could do something instead of sending me to talk to her, but all I did was try to add her to the call. 

I asked her what she wanted me to do and she said I could start by talking to her, and so I called her and she said she didn't wanna talk to me, she then said she thought it was funny how I could get along all day without her, and just now try to contact her again, when I had been texting her all day but she didn't answer.

So AITA for 'defending' my friend in this situation?

'defending' my friend