"lesbian" is not a "sexual attraction" description, it is an "attraction description" for which one possible dimension of attraction can be sexual. Same-sex attraction is no more exclusively about a desire for intercourse than opposite sex attraction. It's entirely possible to have a romantic attraction of any kind without also feeling a desire to engage in intercourse.
I shudder to think about your love life, if you solely define your relationships on sexuality alone. Sexuality is a step from an emotional state to a physical expression of that, of course outside of prostitution and casual hook-ups. And I don't mean that in a negative way, I just...feel sorry for you.
