To echo the other sentiments of this thread try and pull back and be objective and rational when you can. Don't become cold or aloof, but don't be overly available physically, sexually or emotionally. Also, distance does make the heart grow fonder.
I dislike when people preemptively try and get you to be suspicious of their partner,
but being at least aware and a bit weary is good for saving your own ass.
I would encourage you to undertake a handful of questions for yourself about this girl with the intent of grounding.
You can look deeper into your own thoughts, feelings and actions in doing so. When I find myself becoming infatuated, oneitisy or over invested/outcome dependent I jump to some mental exercises to help remain level headed and not in my feelings.
This is entirely in the vein of cognitive behavioral therapy and mindfulness. Also, openly journaling your thoughts not to dissimilar to what you do here on the board would be a great way to reflect and better understand yourself.
Also, consider looking at attachment theory and find where you align, might provide you some insight about your dating style. There are free tests you can take online.
As others have said some signs of codependency are present. However, high mutual interest can lead to these things and you both can be a little too 'into' each other. It is best to mutually slow the row of things, this would likely be beneficial for both of you. You are both undeniably infatuated with one another at this stage and that isn't odd,
in fact i'd argue it is normal. That said, recognizing infatuation and lust for what is will only help you with the difference between them and love/compatibility.
The big signs of codependency to watch out for would be:
-People pleasing
-Grand gestures
-Love bombing
-Poor self esteem/self image
-Caretaking
-Excess dependency and neediness
-Manipulation
Also, be on your toes for Borderline Personality Disorder as it can rear its head in a similar way. Nothing worse then getting snared in a BPD's love trap only to have her leave you high and dry once you've been drained.
Otherwise if you genuinely dig this girl then i'd listen to your boys in the real world who know you well enough. They see things you don't without the inherent confirmation bias. I would bet they are trying to influence you in a good way and only have your best interest in mind.
Sounds like you've got some good guys behind you looking out for ya.
Just don't do anything to self sabotage a potentially good thing
