Comfort
The beating of Harry's heart comfort's me and eases my pain. The way his arms wrap around me makes JJ feel safe and secure in this cruel and miserable world. Putting the bad guys away put both JJ and Harry at ease because it only made them work harder; to cleanse this uncleansed world with all the bad guys in it. As well as try and keep their relationship under are on the same BAU team on the same case; but the team doesn't know about our relationship but when your on the team you'll learn to accept the unexpected. For the simple reason your other BAU co workers probably worked out that you are in a relationship but aren't saying this case effects one more than the other Harry who knows that they are in a intense relationship doesn't want to get to "comfy" with everyone else around.
Although Harry can guess that the rest of the BAU teammates already knows about his and JJ's blossoming relationship. Harry and JJ's relationship never affected their work relationship up until this case. Seconds later Harry feels his girlfriend JJ wrapped her arms tightly around his waist. Feeling the rest of his body start to go numb Harry tried to adjust his body without waking JJ up. But sadly that didn't go as planned after Harry reassured JJ that he was alright and that she was safe and sound; and with that JJ curled back up with her boyfriend Harry and fell asleep. So halfway through the flight Rossi couldn't sleep so he decided to get something strong and alcoholic to put himself to sleep.
So as he made his way towards the back of the plane to the bar something caught his eye; as he turned around a small smile appeared on his face Rossi could tell there was something going on between JJ and Agent Potter. But he couldn't place his finger on it but agent Rossi wasn't alone who thought that there was something going on between JJ and Agent Potter; and they were the following agents Lewis, Prentiss, Alvez, Reid, Simmons and Garcia. So as quietly as he could without waking the sleeping duo Rossi made his way back to his seat and grabbed his phone; and began snapping photo after photo of JJ who was fast asleep up against Harry's shoulder and her arm loosely draped across Harry's lap. Harry in turn had his head on top of JJ's and his hand loosely interlocking with JJ; as well as having his feet perched up on the plane's couch. Rossi quietly got his drink and for the remainder of the flight fell back to sleep with only one thing in mind Agents Potter and Jareau had a lot of explaining to do.