So what do you think constitutes cheating? My boyfriend (who is amazingly understanding) thinks that cheating is when you cultivate an actual relationship with the other person. Like if i turned down time with TJ because i wanted to go do something sexual or romantic with a person i was interested in, I'd be cheating on him. I think the minute you do something sexually consensual with another person you are cheating, but the sexually consensual thing can be different with different people. for example, if he kisses someone because he's drunk, then whatever; if he kisses someone because he thinks (s)he is hot, then we have a problem.