Adler and Bell weren't in a relationship per se, but just flirty with each other. Adler would usually hold him, talk to him, and spend time around him like they were an actual couple. Adler was getting bored, his stupid CIA paperwork was just too much for him to deal with right now. So as literally everyone sat in the safehouse, Adler walked over to Bell and pulled the man up, before pulling him into a kiss and placing a folder in front of them to block out the others from seeing it...