Most 7th years were invited back after the war, Draco and some of his friend such as Blaise, Pansy and Theo had spent a lot of time with the golden trio and Ginny.
Lucius Malfoy was given the dementors kiss along with most of the death eaters. Narcissa and Draco were spared due to the testimony of Harry and Hermione and they took a truth potion. Draco followed to protect his mother and Narcissa followed to protect Draco.
Draco said he was sorry for all the horrible comments and action towards Hermione and as they were head girl and boy they tried to put the past behind them. They found out that they had a lot in common. They both loved reading just he didn't make it very know, Hermione lent him some muggle classic's and taught Draco a lot about other muggle things, his favourite so far was TV.
Ron didn't like their new found friendship and was still a little sore about what happen between him and Hermione. Their little relationship never went anywhere after the war. Ron changed when he got attention and Hermione developed a crush on a platinum blonde boy but nobody but her, Ginny and Pansy.