I know people who liked Obama the first time he was running, then worked hard against him in 2012. Some were democrat but most are registered Independent and have voted against the democrat as often as they have for one.
Like Trump says, you have to work with who you have to work with to get the job done and that's how I've met most of these folks. Someone wants me to come do a bit of work and I better be able to work with whoever the regular crowd may be or my contract is over right away.
With republicans solidly in control of the house tell me again why trump has to work eith Democrat house leadership? There are ways of working around democrats in the Senate. Unless there is a powershift in the house or senate there is no need to cut deals with the democrats. Replublicans ca pass whatever they want.