Article continues below advertisementChristopher Lloyd didn't need to wind back the clock for his latest Instagram photo.The Back to the Future star, 87, celebrated Valentine's Day with his fifth wife, Lisa Loiacono, 55, over the weekend, sharing a loved-up tribute to her.Article continues below advertisementChristopher Lloyd and Wife Lisa Loiacono Married in 2016Tap Here To Add Ok Magazine as A Trusted SourceSource: @mrchristopherlloyd/Instagram'My Valentine,' Christopher Lloyd captioned his snapshot of himself cuddling with his wife."It's the sweetest love.