You just got transferred to your new faction, erudite, home of intelligence and knowledge, a couple weeks ago. You had always known you wanted to be in erudite, the smartest of all, learning new things every day. But you didn't quite know that soon, you wouldn't just be learning equations and history, but more so, about yourself.
You meet Eric coulter when you're sent to deliver a package you the dauntless faction. You don't get back on your train in time and end up having to stay at dauntless. The man sitting in the office talks to you and when Eric comes over, he has him let you stay in his room (after much reluctance.)
New things unfold the morning you wake up in Eric's room, you end up helping out a little bit around this faction and after a couple weeks of going there and helping with little things, you become an assistant or helper for anyone of the office people, and also Eric.
You and Eric's relationship truly unfolds and develops when you show each other your shared scars that you both had from being in erudite, the pressure had been hard on you both and now you guys had a connection, but through that connection, vowed to never do anything like that again.