Valmiki Ramayana Kishkindha Kanda Sarga 1 Shloka 69
Original Shlokaयानि स्म रमणीयानि तया सह भवन्ति मे। तान्येवारमणीयानि जायन्ते मे तया विना।।4.1.69।।
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तया सह with her, यानि those, मे to me, रमणीयानि endearing, भवन्ति स्म used to be, तानि those, तया विना without her, अरमणीयानि not delightful, जायन्ते have turned to be so.
'Whatever was endearing to me earlier in the company of Sita, has turned out to be disenchanting without her.