After the incident, he tried his best to keep both families from suffering too much
Due to Toriel thinking he does not care nor wanting to take action, she divorced him
He still tries to bring back his marriage together with Toriel, giving her flowers and offering her Tea parties with the holiday family, he deeply feels guilty thinking it is his fault that she thinks this way and he should've done something to protect everyone
His priority right now is making sure Kris lives a normal and happy childhood
He often visits papyrus, venting and talking to him, referring to him as "That Silly Skeleton"
He teaches Undyne how to actually be a proper teacher
Personality
He is a gentle man who loves to offer hospitality, if one were to visit him they'd always leave with something, either a smile or flowers, usually both
He knows how to keep his negative emotions in check for the best of everyone excluding himself
He'll present himself as a "Punching bag" to let people vent out and get their emotions out if needs be