misery loves company.

(formal) friend

unrequited love, a broken heart; hopeless romantic

heartbreak / unrequited love

a feeling, sensation, feelings / a state of mind, mood / mood of a place; atmosphere / a little, a bit / feeling depending on a physical condition

sympathy / pity / treasure / dote on

(formal) Female third-person singular pronoun; she, her, girlfriend

(colloquial) a girlfriend (a female partner in a romantic relationship)

(literary) they (about women or girls)

mutual, reciprocal, with one another / appearance, look