Trump and Ryan unlikely to mend fences Because:

“I’m not there right now,” Ryan told CNN’s Jake Tapper Thursday, adding that he hopes to come around once Trump answers his questions and demonstrates an ability to unify the party.
Ryan’s statement is as much a reflection of his deeply held conservative convictions as it is his unique political predicament. The Speaker, always wary of offending his party’s base and maintaining his fragile coalition of House Republicans, wanted to appear open to supporting Trump—eager to support him, in fact—as soon as the businessman can unify the party and show a commitment to the conservative ideas that, in the minds of Ryan and the party’s intellectual class, have long held the GOP together.
But if that’s the requirement, Ryan will likely never support Trump—because Trump appears uninterested in uniting what are now two separate parties and indifferent to the policy ideas Ryan holds dear.
Ryan will be able to maintain his distance over the next six months and provide some cover for vulnerable House members for whom Trump could be a liability.
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Donald Trump breaks the GOP

 This is a very good point. There are now two parties, The Conservative Republican party and the Populist Republican Party which is composed of Tea Party activists and Populists.

So, we might either be seeing two different parties form or literally a Conservative Wing and a Populist Wing of the Republican Party. However, I don't think these two wings can survive together in the same party.