sentimentalise

verbs

make (someone or something) sentimental or imbue with sentimental qualities

"Too much poetry sentimentalizes the mind"; "These experiences have sentimentalized her"

look at with sentimentality or turn into an object of sentiment

"Don't sentimentalize the past events"

is derived from

act in a sentimental way or indulge in sentimental thoughts or expression

is derived from