if you can hold something up but can never put it down,it's called burden-bearing.

Pitifully, most of people are bearing heavy burdens when they are in love.

【If only如果能再愛一次(2004)】

舉得起放得下的叫舉重，舉得起放不下的叫負重。可惜，大多數人的愛情，都是負重的。