Bill Gates and Melinda French Gates are again reckoning with the Microsoft co-founder’s past ties to Jeffrey Epstein, with Gates testifying this week to Congress about their past interactions and his ex-wife newly opening up about her “visceral reaction” to the late convicted sex offender.

Gates struck up a friendship with Epstein in 2011 after the financier promised he could help raise billions of dollars for global public health initiatives.

Bill Gates said that he ended the relationship in 2014 after concluding Jeffrey Epstein could not deliver on those promises.