Stock-based Compensation - Summary of Total Stock-based Compensation Cost Net of Forfeitures (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Employee Service Share Based Compensation Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	$ 9,519	$ 5,849	$ 20,337	$ 9,987
Income Statement Location: bmbl:ProductDevelopmentExpense
Employee Service Share Based Compensation Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	3,792	1,558	7,453	10,275
Income Statement Location: us-gaap:CostOfGoodsAndServicesSold
Employee Service Share Based Compensation Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	82	194	132	348
Income Statement Location: us-gaap:GeneralAndAdministrativeExpense
Employee Service Share Based Compensation Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	4,945	3,507	11,163	(387)
Income Statement Location: us-gaap:SellingAndMarketingExpense
Employee Service Share Based Compensation Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	$ 700	$ 590	$ 1,589	$ (249)