<human>: When my gf and I are play fighting her best friends name would slip out instead of mine. Our names are somewhat similar but I still think something is weird about it.

Backstory: We met through a close mutual friend. She knew him since middle school, lived with him when she got kicked out and remained close. I met him in high school and we later became roommates. 

One weekend we went to visit her college and I kissed her but we kept it to ourselves. After that weekend she and her friend tried to date for a couple weeks but she broke it off because she only saw him as a close friend and after that she started talking to me. The best friend became distant but they eventually made up. 

And one thing that really bugs me is she wouldn't kiss me in front of him until they got into a drunk argument at this party we went to recently. When we first started dating she didn't care.

Can you provide a brief rundown of the text in within 3 sentences?
<bot>: gfs best friends name that she once and may still have feelings for slips out when she's saying my name when play fighting/flirting.