<P> In social relationships , an ex ( plural is exes ) is someone with whom a person was once associated , in a relationship , marriage , or once talked to . As a prefix , ex - can refer to a variety of different relationships ; for example , one might refer to a music group 's ex-guitarist , or someone 's ex-friend . When used alone , ex as a noun is assumed to refer to a former sexual or romantic partner , especially a former spouse . This often has a derogatory tinge , especially if it refers to unrequited feelings . </P>
what is the meaning of x girl friend
a former sexual or romantic partner