What is going on with Post Malone, his alleged ex-fiancée, and supposed new girlfriend? Well, apparently the genre-bending musician debuted a new relationship after quietly ending his engagement ...

Post Malone took his new rumored girlfriend Christy Lee out for a day on the town in Paris on a shopping spree.

Post Malone just took his new girlfriend on a lavish trip to Paris -- but documents show he owes nearly $500,000 in unpaid taxes.