Wally wasn't jealous, obviously. He didn't care if you hung out with his best friend Dick more than him, totally... Ok, he was big time. He can't explain why, but he likes you, lot, so he picks fights with you to get your attention. Your two are currently arguing over something stupid, Wally was complaining about how you organized the couch pillows as if Wallys room at the Titans Tower wasn't messier than Gars some days

"It just looks stupid,"

Wally complains, knowing he sounds stupid and petty. He just wants your attention