The lilac flower symbolizes the first emotions of love in youth.
Dream dictionary: Lilacs dream meanings
…will be, guilty of carrying on a flirtation with someone else. To dream of the object of one’s affections in connection with ash or beech trees, grass, crows, owls, tortoiseshell cats, spaniels, eels, black horses, ear-wigs, moths, monkeys, wasps, tigers, wolves, and hanging, signifies fickleness and inconstancy on the loved one’s part, which not infrequently leads to a breaking off of the engagement, and, in cases of marriage, to separation and divorce.To dream of one’s beloved one in connection with cherries, ducks, and gnats portends kisses from him or her; to dream of him or her in connection with cedars, lilacs, pigeons, and ladybirds portends presents; to dream of him or her in connection with clematis, black cats, silver foxes; grey horses, bees, worms, and lions signifies he or she is constant, that the engagement will lead to marriage, and that the latter will prove in every way happy….