Do Gatsby and Daisy Get Together?

Gatsby lied about his background to Daisy, claiming to be from a wealthy family in order to convince her that he was worthy of her. Eventually, Gatsby won Daisy's heart, and they made love before Gatsby left to fight in the war.

Why did Gatsby and Daisy's relationship fail?

Daisy can't be blamed for her refusal to run away with Gatsby: she has a daughter to care and a lifestyle she is very attached to. She leaves him again, but even this time Gatsby doesn't believe this is for real. Daisy is too connected to his American dream to believe that it is the end, an ultimate failure.

Does Daisy have feelings for Gatsby?

Yes, she loves Gatsby, but she doesn't love him enough to dismantle her entire life, as you said it. She likes the stability and metaphoric safety (not physical, of course, because of Tom's temper) of staying with Tom because it's the situation she's already in.