People are extremely judgmental and ignorant when it comes to Archie, he basically gets blamed for everything.
People constantly call him a fuckboy; let's look into that a little bit:
Very first episode of the show, Archie and Veronica Kiss in secret, but it's both of them who goes for the Kiss and it actually so happens that Archie is the first to say "We shouldn't do this" = Archie gets all the blame
1x09; Cheryl is the one s’embrasser Archie, and he's not okay with it = Archie gets all the blame
For half of the montrer pretty much, Archie and Veronica have been together and stayed true to each at this point.
The latest episode; If toi watch the scene with Betty and Archie again, Betty is the one going for the Kiss here = Archie gets all the blame
When 2x08 ended; everyone immediately hate and judge Archie for that last scene, I do admit it looked weird of course, but if people actually used their minds for a seconde instead of being so quick to judge, Archie and Betty had both broken up with Veronica/Jughead, they've been best Friends since forever, it's very natural that toi turn to an old friend/your best...