After the Quidditch match, and subsequently Lavender jumping onto Ron, they started a new relationship. It was a surprise to everyone, even those in Gryffindor. After a bit of sleuthing, it seemed that Lavender was fawning over Ron for quite some time. Ever since his first game last year, she had been enamored with him. According to Parvati, her sister was the main recipient of Lavender’s fawning over the youngest male Weasley. But in any case, they do seem to be happy. 