propose /prəˈpəʊz/ (verb) to suggest a plan, an idea, etc. for people to think about and decide on Example: He proposed changing the name of the company.
crush /krʌʃ/ (verb) to press something so hard that it is damaged or injured, or loses its shape Example: My dress got crushed in my suitcase.
love /lʌv/ (noun) a very strong feeling of liking and caring for somebody/something, especially a member of your family or a friend Example: I love to go out dancing.
first love /fəːst lʌv/ (noun) Example: He's my first love.
unrequited love /ʌnrɪˈkwʌɪtɪd lʌv/ (noun) is love that is not openly reciprocated or understood as such by the beloved Example: Only so many poems can be written about unrequited love.
love triangle /ˈlʌv traɪæŋɡl/ (noun) a situation that involves three people, each of whom loves at least one of the others, for example a married woman, her husband, and another person that she loves Example: He cheated her. He was in a love triangle.
lovesick /ˈlʌvsɪk/ (adjective) unable to think clearly or behave in a sensible way because you are in love with somebody, especially somebody who is not in love with you Example: I wanted to sigh like some lovesick schoolgirl.
lovelorn /ˈlʌvlɔːrn/ (adjective) unhappy because the person you love does not love you Example: There are two poor lovelorn souls here who don't fit in.
lovey-dovey /ˌlʌvi ˈdʌvi/ (adjective) expressing romantic love in a way that is slightly silly Example: A young couple was in there acting lovey-dovey.
flirt /flɜːrt/ (verb) to behave towards somebody as if you find them sexually attractive, without seriously wanting to have a relationship with them Example: She's trying to flirt him.
break up (with someone) /breɪk ʌp/ (phr v.) to separate into smaller pieces Example: They broke up after 5 years in a relationship.