So my Nuzleaf and Monferno have become really great sparing partners whenever I have my team do training sessions. They've gotten very close to where they will only practice with each other and refuse to battle any of their other team members.

Sometimes at night I hear strange shuffling and whenever I opened my drowsy eyes I see the two sneak off somewhere together. I used to get worried that something bad might happen to them but when every time when ii wake up in the morning they're always safe and sound. Only thing different is that they always seem tired and really warm. I thought maybe they might've gotten sick but they never have from the time I've noticed them sneaking out.

I am deeply concerned about the safety of them both and am wondering during the times at night they sneak out together, should I follow them?