Preface: I'm not a shipper currently. I respect both Frank and Gerard's privacy and their current relationships! I find fan theories, lore, and this era of the MCR fandom suuuper interesting.
So, to set the scene, Projekt Rev was a festival organized by Linkin Park and in 2007 was attended by alternative rock bands, including MCR ( My Chemical Romance ) and MSI ( Mindless Self Indulgence ). As all of you must know, Gerard's current wife, Lyn-Z ( Lindsey), was a bassist in MSI. Throughout this tour, Gerard and Lyn-Z begin seeing each other. This fact is evident through the matching writing they wore on stage, most famously the line that would become part of the song 'Summertime.' ( Although, according to sources, they met in June 2007 their relationship only became official four months after in September. You can "be involved" with someone emotionally and junk before dating them )
( Lyn-Z seen with "Run away with me..." and Gerard seen with "...Anytime you want," written on one another )
During this festival, MCR played "The Sharpest Lives." It's a widely accepted interpretation that "The Sharpest Lives" is a song about living on the edge dangerously and recklessly. We all know Frank Iero can be reckless during his performances, swinging his guitar over his head, falling to the floor, etc.
( An example of Frank going crazy on stage )
Constructing a coherent timeline ( as someone born in 2004 ) for these events was difficult. According to these videos, both the infamous kiss and the infamous fight happened at the same festival. This festival also birthed the more intimate Frerard moments, the dry humping incident, the licking, and of course, the KISS, which we see repeated in gif and image form today.
( A better video of the kiss https://www.youtube.com/watch?v=X_TSf4w6fxA min. 0:45 )
These intimate moments, as seen here, are moments of pure physicality. Anyone watching the band for the first time wouldn't be wrong to mistake these displays for a homoerotic relationship especially considering some of the erotic elements to the songs they were performing. At this point, Gerard wasn't pulling or pushing away from Frank, who was coming on full force. It was only during "The Sharpest Lives" performance did Gerard indeed shove Frank off and wrestled with him. Also seen in that video is Gerard pushing Frank to the ground, who looks confused for a bit afterward. Gerard also dropped his microphone ( which made people suspect Frank was going in for a kiss ). Finally, Gerard is seen kicking Mikey's stand and seeming to walk off stage before circling back.
( The Fight. Minute 2:50 )
All of these moments point towards a rage, almost tantrum-like reaction to a hug or kiss, nothing Gerard hasn't been seen doing with Frank, and nothing, at this point, shocking to be doing at the festival, either. While it's wrong to blame their fight on Lyn-Z, people must realize those feelings and emotions were there, or else Gerard would have stopped Frank on all counts of intimacy. I think what the people in the crowd of Projekt Rev witnessed that day was a live rejection. Gerard, who had been dealing with both Lyn-Z ( matching writing and collaborating artistically ) and Frank, who was yearning for SOMETHING ;;;;)))) !! Perhaps, Gerard was conflicted between his emotions, obviously having been able to make his mind up four months later. This moment, to me, was indeed the death of Frerard as anything more than a deep friendship. Remember that male friends can kiss, touch, hug, etc., without necessarily pointing towards a relationship, but those moments, as filmed, were more than a friendly drunk kiss or peck, and much more than a simple hug or hand hold. The presumed reason for the fight was simply a lot of emotions within Gerard bubbling to the surface. The intimacy could have been too much for him at the moment, having to partially decide where his life would be heading in liking a girl and ultimately keeping up this on-stage, homoerotic 'relationship' with his bandmate and friend. In addition, Gerard could have been having a rough night, which only added to the aggression he needed an outlet for, which unfortunately was Frank. The idea of him having a rough night isn't totally on the blue and doesn't solely rely on my ability to read emotion from a short clip. Gerard was having issues with his voice, and the crowd certainly was not helping.
In conclusion, as Redditor bobbysgirl777 put it best three years ago, "As for the fight, there are only theories, the main one being that Frank was going in for a kiss (or hug) like they did many other times on that tour, but since Gerard was getting more serious with Lindsey that he wasn't into it. That combined with maybe having a bad night (his voice is clearly suffering and the crowd was kind of a bust), he got angry." I hope you keep in mind that this is all speculative and just an internet historian having some good fun! I love Lyn-Z and MSI was one of my favorite bands for many years. This essay is by no means a "WAAAH, SHE BROKE UP MY YAOI COUPLE SUGOI!!!! EVIL WOMAN!! MY SMOL BEANZ XC!!" type of post, more like a fun compilation on the lore being the 2007 Projekt Rev show, and a bit of a research project for me.
I HOPE U ALL ENJOYED!! I want to kinda make this more of a common thing, doing internet research on certain MCR history related things ( not only ship stuff I promise ) to hone my writing abilities + research abilities. Anywayzzz i would rlly appreciate it if u support this or liek shared it or something cuz this took suuuper long. only if u want tho :3 !! LUV U ALL !!
Here r all the videos i used to construct the timeline: