Im still in love with my ex boyfriend  though he's married now
Ex (relationship)
In social relationships, an ex (plural is exes) is someone with whom a person was once associated, in a relationship or marriage. 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
." Sophie was left "terrified" when she learned from Kieran's ex fiancé, Libby Jeffries (Fleur Saville), that he was still involved in criminal activities. The couple ended up getting married but his guilt over Morgan lead the two to break up. Rickitt believed that there was still hope for the romance however, "Kieran is going to love Sophie until the day he dies. For him, it's never over with Sophie and that's one of the things he's carrying guilt for. He spoilt