they hooked up at a halloween party last year and then had a flinglationship until some time around thanksgiving? so just around three weeks of hooking up and endlessly bickering but in an old married couple way until izzy gave him the boot and didn’t talk to him again until right after new year’s. then i’d say it’s up to dev on what he’s told her about izzy. bUT they get along really well now and all of izzy’s poking at him comes from being so fond of him.