Learn English – To dislike someone while acting like you get on/along

I am looking for a verb (it can be a one-word verb or a phrasal verb) to use for a person who dislikes someone, but still acts like they get on (mildly) in order to avoid problems in a group of friends and colleagues.

The idea is to be able to describe the relationships of the people in the group in as few words as possible.

Example:
John gets on really well with Daniel, but he [dislikes though he acts like he mildly gets on with] Daniel's son.

Edit:

@awhyzip has made me realise that I should have clarified the type of behaviour I have in mind when I say 'get on mildly'.

I envision 'getting on' as people interacting with a (higher or lower) degree of enthusiasm. When I added mildly I was hoping to convey the idea that John interacts with a civil level of interest but isn't enthusiastic about it.

Say, he might start an interaction such as 'how's the new job' or 'congratulations for the promotion', he might participate in activities alongside Daniel's son without outward signs of displeasure, might even show genuine pleasure that the boy won a marathon (although this could be more of a reaction to Daniel's joy and pride), but most interactions would not be started by John himself and he would still think that Daniel deserved a better son.