<human>: Since I've gotten into my first real relationship (about 8 months now), he's just been distancing himself from me and talking to a new girl (17F.) Normally I don't really care if he makes a new friend, but the fact that they're calling each other nicknames I've called him is weird. Plus, she kind of looks like me... 

I initiate conversations 70% of the time, and conversations are stale and only last like 10 messages. Then it repeats at least once a week. He's been sorry for not talking and all of that, but like I just don't really like hearing the same lame excuse. Meanwhile they talk like everywhere so it's not much of an excuse?

For the past few days, I just haven't talked to him. He usually says things like "oh I really don't want to lose you as a friend" but just shoves me to the side afterwards, and I'm tired of it.

Although, we've been friends for years, like we listen to similar music, like the same shows and movies, and have the same hobbies. So it's just natural for us to be good friends. Like we've tried to pursue something romantic, but nothing seemed to click.  

Since I began my relationship a few months ago, he just drifted from me. Which bums me out.

Also, If it because of my relationship, I think it's unfair because I spent like 2 years of our friendship listening to his talks about this girl he loved but she didn't. Even when I liked him (and he knew I did.) 

I don't necessarily see his new friend as a bad person, considering she's followed me on most social media sites I use (he admitted to asking her to unfollow me.) She's a cool person to talk to, like even I like her. It's just him.

Like I'm starting to develop negative feelings about him, like I resent him, and I feel like jealously. Or is it all in my head, and am I the one that should be apologizing?

Condense the text into a few key points
<bot>: I feel as if my best friend is trying to replace me, and I don't exactly know how to deal with it.