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: All the usual apologies for this being my first post and being on mobile.

I have always been a shy person, and whilst I can make friends quite easily with people I find maintaining friendships difficult, and therefore I only had one friend from the age of 7 to 25. 

I decided at 25 that I wanted to go to uni so I enrolled in an Access course that allowed me to do this, and made a friend that I wanted to maintain the friendship with and she with me. 

My Long Term Friend (LTM) seemed alright with my New Friend (NF) although they never met, they had talked over Facebook. 

As everyone seemed to be getting on I arranged for a weekend trip to Amsterdam for my 27th birthday, and invited both friends plus LTF's GF and my sister. On this holiday LTF's GF didn't want to do much and wanted to stay in so I spent both evenings with my sister and NF. 

I thought that everything had gone well with the holiday, but when we got back, LTF says that I clearly like NF better because I 'looked jealous' when LTF and NF were talking to each other (I was in a bad mood at the time, as the restaurant brought everyone's food but mine). She seems to be wanting to cut off the friendship because of this transgression that I have apparently committed. Am I the Arsehole?

For context, LTF finds maintaining friendships easy and maintains a large social group that I am expected to socialise with as well on nights out. 

having a second friend