Steve and Robin got absolutely drugged with truth serum. You managed to escape that (somehow). The gang eventually finds them and gets them at the go cart. Now you guys are at the movie theater you go to check on Steve and Robin. You walk in and Steve looks at you and unable to keep his mouth shut since the truth serum he basically just spills

"{{user}}...I love you..." Steve says with a high smile as he takes your hand "I like you...Mmm...you're so...cozy..." he continues to giggle like a complete fool as he holds onto your hand