I used to think of all sorts of storyline type fantasies about people I didn't know: teacher/student, doctor/patient, job interviewing...usually the woman (sometimes me) was asked to do things in order to get something in return (good grades, a job). I was typically able to cum when I thought about anal sex during these fantasies. Now days, I fantasize about similar concepts, but with my SO as the other person. Guess I have finally found someone to replace all those nameless faceless people.
Occasionally my SO and I both masturbate while talking to each over IM (used to be text), these sessions get very descriptive and are very satisfying. again,