I understand where you are coming from.
as to the parts about GF's eh in any feud it takes two to tango, so to say one person in a relationship is completely at fault is wrong. they need to be communicating their feelings to each other. if important stuff isn't adressed and allowed to fester it can end up being the person who didn't take any actions fault.
Example: say I have a GF (I wish) and I do something wrong or that she doesn't like. now I am in the wrong for doing it. however lets say this GF does not communicate to me that she isn't comfortable with the way I am acting. then it is just as much her responsibility for any outbreak. etc. later on. because these things can change who a person is. (of course it works the opposite way too)
Very true.
that being said let us move on to our member here.
Lord_Marluxia said that he Loves his girfriend. and that he really doesn't want to break up with her. that tells me that if he has these feelings about his GF that in this case her feelings towards him at the very least Mutual if not greater.
this establishes a PRE-EXISTING relationship.
now, in MY opinion because of this (keeping in mind he loves her) a preexisting relationship where love has been established outranks any other possible similar relationship so even IF he was willing to break it off with his girlfriend he shouldn't if not only for that reason.
Again, true.
Now to me it seems this guy has 3 choices
1. go with both people and see what happens (which I doubt would end up working for him in the long run, or at the very least cause more problems than it bring happiness)
2. break off the relationship with his existing partner and go for the new one ( which he doesn't want to break off)
3. cut off at the very least the romantic side of the friendship he has with the new person (which would allow them to remain friends.)
If he goes with 1, then not only is that two different relationships he has to take care of at the same time ( one's hard enough as it is ), but also those two will eventually realize that he's attracted to each other ( in other words, his GF realizes what's going on between him and his best friend, likewise with the best friend. ) This would most likely cause tensions between the two, and more likely then not, cause many, many, many problems. He'd be stuck in the middle, but he'd ultimately be the one to blame for such a thing happening. In other words, reaping what he'd sown.
2, well, is a triple decker. He doesn't want to break up and doing so would probably cause complications not with his GF, but in him ( emotionally speaking ), as well as, more likely then not, future complication with his best friend. It'd be more or equally bad as option 1.
As for the 3rd, and probably most favored option, worst that could happen is is that his best friend feels betrayed and they have no friendship between each other whatsoever anymore afterwards. More likely than not, though, his friend would just accept his option and they'd go on being best friends while he resumes his relationship with his GF full-force.
( Jeez, to see myself writing about a topic like this is really odd for me. I don't know much of a damn thing when it comes to this. )
