right now he loves mj more becouse, well there no one else thre,BUT he has a unresolved love with gwen, like when the sin arc started, he said something like there is 2 things he dont like to be messed, one was her and the other was gwen.not to say gwen was his first true love,betty was only a girlfriend,gwen was true love, mj was a hooker who took advantage of gwen death,even though LATER they made her know he is spiderman ( i still wonder why) from the begining and made that the reason she wanted to confort peter in a way.
in fact since she knew that spider man was peter, i believe mj planed gwens death, after all she wanted peter but convinced gwen to go back to peter,knowing the green goblin was around! so she set up gwens death!
forever gwen!
and dusnt will be up for spider 4, its all about money or you dont get it what they mean when they say "as long as there are good stories to tell" ,so here is s translation : i WANT more money!
she told on a interview her character would be up for spider 4,although that not much decisive since ben was dead on first and keep coming, but i doubt raimi would waste 3 movies seting up peter and mj just to kill her off, and put gwen on her place,after all gwen will be nothing in the movie,so far as i heard, gwen is also a cop in the movie, so the movie gwen is actually the comic jean dewolf (who i also love).