Todd Bridges, who famously played Willis on "Diff'rent Strokes," has tied the knot for a second time ... this time with a low-key Bev Hills ceremony.
Sources at the wedding tell TMZ ... Todd married a woman named Bettijo on Wednesday at Greystone Mansion & Gardens, and it was an intimate and exclusive affair for those closest to the bride and groom.
The reception went down later at Il Cielo, a couple of miles away -- more people were invited to that, and the party went well into early Thursday morning.
Talk about your whirlwind romances ... we've learned Todd and Bettijo met 9 months ago on a dating app, and got engaged about 6 months later. She comes from a big Mormon family, and Todd's now stepdad to her 4 kids.